0w-40 or 5w-40 for hot summers in audi with turbos

[mongo161]

IMO....most, if not all, Dino Diesel juice is very stout with an excellent add pack. I really don't see how this would pose a problem for a summer run of 5K miles if the engine is clean.

These oils hold up very well, in vehicles and machinery that are put under an enormous amount of stress every day, and also in fleets that seem constant run time.

Could it possibly be that some people have been "brainwashed" into thinking that conventional and Dino Diesel oils are sub-standard to synthetic hydro-cracked group III, base oils?

IMO...If some of these HDEO Conventional Oil products decided to pay for every "oil designation" testing worldwide, the price of the oil might meet or exceed most current oil specifications for foreign and domestic applications.

But then again...what would that accomplish? The cost of using HDEO would be greatly increased, due to all the testing, fees and royalties associated with these designations and as a result make the oil just as expensive, if not more expensive, than "Hydro-cracked Group III" base oil synthetics.

IMO...sometimes you have to look beyond the forest and the marketing facade to get the real picture. IMO...it might pay off for you.... if....you think outside of the box.

 

[glxpassat]

Originally Posted By: audia6
Hi the car in question is a audi 2.7t with twin turbos.

so far i have used mobile 1 0w-40 car now has 77k. I have read that 0w-40 is not a good oil to use in summers because it is a thinner oil than 5w-40 from a couple of posts over at audiworld/forums.

I want to stick to vw approved oil and to make the oil a bit thicker should i try 5w-40 valvoline for the summers? The location is texas (where summer basically never ended) lol

i dont understand if both oils are 40 weight in the heat why would people say 0w-40 is bad for summers? shouldn't they provide the same protection in the heat?


Doesn't this engine spec an oil that meets VW 503.01? That's an Audi turbo high horsepower oil spec. If so, GC which is a 0w-30, is the only readily available product that meets it in the US, unless you buy a VW 504 mid-saps rated oil which superseded it. M1 0w-40 used to meet it but no longer does.

 

[edyvw]

Originally Posted By: glxpassat
Originally Posted By: audia6
Hi the car in question is a audi 2.7t with twin turbos.

so far i have used mobile 1 0w-40 car now has 77k. I have read that 0w-40 is not a good oil to use in summers because it is a thinner oil than 5w-40 from a couple of posts over at audiworld/forums.

I want to stick to vw approved oil and to make the oil a bit thicker should i try 5w-40 valvoline for the summers? The location is texas (where summer basically never ended) lol

i dont understand if both oils are 40 weight in the heat why would people say 0w-40 is bad for summers? shouldn't they provide the same protection in the heat?


Doesn't this engine spec an oil that meets VW 503.01? That's an Audi turbo high horsepower oil spec. If so, GC which is a 0w-30, is the only readily available product that meets it in the US, unless you buy a VW 504 mid-saps rated oil which superseded it. M1 0w-40 used to meet it but no longer does.


Pennoil Ultra 5W40 meets those requirements also!

 

[glxpassat]

Originally Posted By: edyvw
Pennoil Ultra 5W40 meets those requirements also!


True, but you can't get it on sale at Autozone.

 

[edyvw]

Originally Posted By: glxpassat
Originally Posted By: edyvw
Pennoil Ultra 5W40 meets those requirements also!


True, but you can't get it on sale at Autozone.

True, that is why I order on Amazon.
I used GC in 1.8T. Very good oil.
He can try in 2.7T. Engine might like it, or not. I would go with a little bit heavier oil.

 

[fdcg27]

Originally Posted By: edyvw
Originally Posted By: fdcg27
Mongo may have a good point.
The HDEO fleet oils he refers to are primarily intended for use in heavy turbo diesel engines.
The reason these oil have none of the appropriate Euro approvals may be that their makers don't bother.
Their makers aren't marketing these oils to the turbo car crowd, but to the eighteen wheel turbo diesel gang.
The OP's Audi is still too young for such experimentation, but once the Audi's mileage is doubled, he might consider a dual rated HDEO.
HDEO 5W-40 is popular among turbo Subie owners, and I doubt that the Audi is any harder on oil than is a turbo Subaru.
Rotella T6 has shown good UOAs in turbo Subes as well as in some VW applications.
HDEOs have considerable long drain potential as well.
Mongo is not as far off base as you might think, certs or not.


He will not have any problems running Rotella T6. However, Dino 15W40 is out of question, unless he wants to know how sludg looks like!


Really?
Then how do you suppose all of those OTR turbo diesel engines are run close to top speed all day long using 15W-40 HDEOs?

 

[edyvw]

Originally Posted By: fdcg27
Originally Posted By: edyvw
Originally Posted By: fdcg27
Mongo may have a good point.
The HDEO fleet oils he refers to are primarily intended for use in heavy turbo diesel engines.
The reason these oil have none of the appropriate Euro approvals may be that their makers don't bother.
Their makers aren't marketing these oils to the turbo car crowd, but to the eighteen wheel turbo diesel gang.
The OP's Audi is still too young for such experimentation, but once the Audi's mileage is doubled, he might consider a dual rated HDEO.
HDEO 5W-40 is popular among turbo Subie owners, and I doubt that the Audi is any harder on oil than is a turbo Subaru.
Rotella T6 has shown good UOAs in turbo Subes as well as in some VW applications.
HDEOs have considerable long drain potential as well.
Mongo is not as far off base as you might think, certs or not.


He will not have any problems running Rotella T6. However, Dino 15W40 is out of question, unless he wants to know how sludg looks like!


Really?
Then how do you suppose all of those OTR turbo diesel engines are run close to top speed all day long using 15W-40 HDEOs?


As far as I know those are not 2.7 Biturbo engines. Then why not using those oils in any cars? Why paying more for VW 502.00 or 503.01 oils when we can just get sometihng off the shelf in Wal Mart?

 

[zanzabar]

Originally Posted By: fdcg27

Really?
Then how do you suppose all of those OTR turbo diesel engines are run close to top speed all day long using 15W-40 HDEOs?


I assume it's *because* they are run all day long at near top speed that they use 15-40 HDEO. Also because the sump capacity is many gallons and 15-40 is half the price of 5-40 HDEO.

The OP likely needs an oil that can withstand short trips and frequent cold starts. If he was driving it all day long on only 1 cold start then maybe 15-40 HDEO would work ok, although 5-40 synth would still be better.

 

[artificialist]

Originally Posted By: fdcg27
Originally Posted By: edyvw
Originally Posted By: fdcg27
Mongo may have a good point.
The HDEO fleet oils he refers to are primarily intended for use in heavy turbo diesel engines.
The reason these oil have none of the appropriate Euro approvals may be that their makers don't bother.
Their makers aren't marketing these oils to the turbo car crowd, but to the eighteen wheel turbo diesel gang.
The OP's Audi is still too young for such experimentation, but once the Audi's mileage is doubled, he might consider a dual rated HDEO.
HDEO 5W-40 is popular among turbo Subie owners, and I doubt that the Audi is any harder on oil than is a turbo Subaru.
Rotella T6 has shown good UOAs in turbo Subes as well as in some VW applications.
HDEOs have considerable long drain potential as well.
Mongo is not as far off base as you might think, certs or not.


He will not have any problems running Rotella T6. However, Dino 15W40 is out of question, unless he wants to know how sludg looks like!


Really?
Then how do you suppose all of those OTR turbo diesel engines are run close to top speed all day long using 15W-40 HDEOs?

Heavy equipment diesel engines don't reach the temperatures seen in a turbocharged gasoline engine, that is why conventional 15w40 will work fine in heavy equipment diesel engines, but it will turn to sludge in turbocharged gasoline engine.

 

[fdcg27]

Originally Posted By: edyvw
Originally Posted By: fdcg27
Originally Posted By: edyvw
Originally Posted By: fdcg27
Mongo may have a good point.
The HDEO fleet oils he refers to are primarily intended for use in heavy turbo diesel engines.
The reason these oil have none of the appropriate Euro approvals may be that their makers don't bother.
Their makers aren't marketing these oils to the turbo car crowd, but to the eighteen wheel turbo diesel gang.
The OP's Audi is still too young for such experimentation, but once the Audi's mileage is doubled, he might consider a dual rated HDEO.
HDEO 5W-40 is popular among turbo Subie owners, and I doubt that the Audi is any harder on oil than is a turbo Subaru.
Rotella T6 has shown good UOAs in turbo Subes as well as in some VW applications.
HDEOs have considerable long drain potential as well.
Mongo is not as far off base as you might think, certs or not.


He will not have any problems running Rotella T6. However, Dino 15W40 is out of question, unless he wants to know how sludg looks like!


Really?
Then how do you suppose all of those OTR turbo diesel engines are run close to top speed all day long using 15W-40 HDEOs?


As far as I know those are not 2.7 Biturbo engines. Then why not using those oils in any cars? Why paying more for VW 502.00 or 503.01 oils when we can just get sometihng off the shelf in Wal Mart?


It seems as though you're getting the idea.
Why, indeed, pay more?
These oils can be run in a variety of German applications, at least in warmer weather, where cold starts are not the problem they would be in a nothern winter.
In Alabama, a 15W-40 HDEO could probably be run year 'round.
Some savvy owners already know this.
Incidentally, there are VW spec oils on the shelf at Walmart, M1 0W-40 being a good example.

 

[fdcg27]

Originally Posted By: artificialist
Originally Posted By: fdcg27
Originally Posted By: edyvw
Originally Posted By: fdcg27
Mongo may have a good point.
The HDEO fleet oils he refers to are primarily intended for use in heavy turbo diesel engines.
The reason these oil have none of the appropriate Euro approvals may be that their makers don't bother.
Their makers aren't marketing these oils to the turbo car crowd, but to the eighteen wheel turbo diesel gang.
The OP's Audi is still too young for such experimentation, but once the Audi's mileage is doubled, he might consider a dual rated HDEO.
HDEO 5W-40 is popular among turbo Subie owners, and I doubt that the Audi is any harder on oil than is a turbo Subaru.
Rotella T6 has shown good UOAs in turbo Subes as well as in some VW applications.
HDEOs have considerable long drain potential as well.
Mongo is not as far off base as you might think, certs or not.


He will not have any problems running Rotella T6. However, Dino 15W40 is out of question, unless he wants to know how sludg looks like!


Really?
Then how do you suppose all of those OTR turbo diesel engines are run close to top speed all day long using 15W-40 HDEOs?

Heavy equipment diesel engines don't reach the temperatures seen in a turbocharged gasoline engine, that is why conventional 15w40 will work fine in heavy equipment diesel engines, but it will turn to sludge in turbocharged gasoline engine.


They don't?
According to what I have found, local oil temperatures in a diesel run hard exceed those found in a turbo gasser.
Bulk oil temperature isn't as important as the extremes the oil will see on its passage through the engine.

 

[Doug Hillary]

Hi,
mongo161 - You said:
"IMO...If some of these HDEO Conventional Oil products decided to pay for every "oil designation" testing worldwide, the price of the oil might meet or exceed most current oil specifications for foreign and domestic applications."

The most common engine lubricants used in heavy high speed diesel engines is a conventional lubricant - typically of 15W-40 viscosity

Diesel lubricant standards have always been very high through Manufacturer "ëndorsement" and te4sting requirements. In the 1960s for instance I always used CAT Series 3 (and supplements) as my baseline lubricant at a time when other standards were wanting. Of course many were monograde then. The same situation remains today - typically the engine Manufacturer knows best IMO

 

[audia6]

Originally Posted By: glxpassat
Originally Posted By: audia6
Hi the car in question is a audi 2.7t with twin turbos.

so far i have used mobile 1 0w-40 car now has 77k. I have read that 0w-40 is not a good oil to use in summers because it is a thinner oil than 5w-40 from a couple of posts over at audiworld/forums.

I want to stick to vw approved oil and to make the oil a bit thicker should i try 5w-40 valvoline for the summers? The location is texas (where summer basically never ended) lol

i dont understand if both oils are 40 weight in the heat why would people say 0w-40 is bad for summers? shouldn't they provide the same protection in the heat?


Doesn't this engine spec an oil that meets VW 503.01? That's an Audi turbo high horsepower oil spec. If so, GC which is a 0w-30, is the only readily available product that meets it in the US, unless you buy a VW 504 mid-saps rated oil which superseded it. M1 0w-40 used to meet it but no longer does.


So do i use 503.01 or 502?
I have about 22 quarts of mobile 1 0w-40 left. (it was on sale at autozone so i stocked up lol)

seems like lots of people here favor the 0w-40 for the 2.7t
as of now i do not want to use shell rotella because it does not meet audis 502 list.

I will however give rotella a try on my N/A 2.8 in the near by oil change. If this is a bad idea stop me now lol THe car has 101k and is completly stock.

My oil temps on both cars reach about 225F-230F on long highway runs at 70MPH

 

[Quattro Pete]

M1 0w-40 will be perfectly fine for your 2.7t.

 

[kschachn]

Mobil 1 0W-40 meets some VW specs but not all. You need to know what you are after before you buy any oil, regardless of how good M1 0W-40 may be.

Guess many of us are just not savvy enough for you, I can live with that.

Originally Posted By: fdcg27
It seems as though you're getting the idea.
Why, indeed, pay more?
These oils can be run in a variety of German applications, at least in warmer weather, where cold starts are not the problem they would be in a nothern winter.
In Alabama, a 15W-40 HDEO could probably be run year 'round.
Some savvy owners already know this.
Incidentally, there are VW spec oils on the shelf at Walmart, M1 0W-40 being a good example.

 

[kschachn]

I'm curious, how do you know this?

Originally Posted By: fdcg27
According to what I have found, local oil temperatures in a diesel run hard exceed those found in a turbo gasser.

 

[edyvw]

Originally Posted By: kschachn
Mobil 1 0W-40 meets some VW specs but not all. You need to know what you are after before you buy any oil, regardless of how good M1 0W-40 may be.

Guess many of us are just not savvy enough for you, I can live with that.

Originally Posted By: fdcg27
It seems as though you're getting the idea.
Why, indeed, pay more?
These oils can be run in a variety of German applications, at least in warmer weather, where cold starts are not the problem they would be in a nothern winter.
In Alabama, a 15W-40 HDEO could probably be run year 'round.
Some savvy owners already know this.
Incidentally, there are VW spec oils on the shelf at Walmart, M1 0W-40 being a good example.


Yeah, stupid me. I mean I wa spaying for GC almost $8, and I could buy cheap HDEO oil for my 1.8T.
Oh I know what it is: a sludg problem in 1.8T.
So do you have any scientific proof that HDEO will not cause any problem in 1.8T or 2.0T? Just to know, bcs I could save some money!

 

[fdcg27]

Try it.
The only scientific proof comes from running the oil in engines.
I've used GC too, although I've never paid close to $8.00/qt for it, since it can be found more cheaply when AZ runs a Castrol products oil change special.
15W-40 HDEO is intended for high temperature long drain applications.
Common sense would indicate that it would probably do just fine in a turbo VW.
If I had a turbo VW, I might try a 15W-40 myself.
Visual examination would indicate whether sludge was a gradual issue in using such an oil, and a UOA would confirm that the oil can hold up in the application.

 

[fdcg27]

Google "diesel engine oil temp" and check out some of the hits.
I had the impression that large diesels saw higher local oil temperatures than did gas enigines, and that appears to be the case.

 

[edyvw]

Originally Posted By: fdcg27
Try it.
The only scientific proof comes from running the oil in engines.
I've used GC too, although I've never paid close to $8.00/qt for it, since it can be found more cheaply when AZ runs a Castrol products oil change special.
15W-40 HDEO is intended for high temperature long drain applications.
Common sense would indicate that it would probably do just fine in a turbo VW.
If I had a turbo VW, I might try a 15W-40 myself.
Visual examination would indicate whether sludge was a gradual issue in using such an oil, and a UOA would confirm that the oil can hold up in the application.


Seriously do not see point going with 15W40? What is the point? Save few bucks and risk sludge, turbo failure etc? Not to mention that on cold weather you have slower start due to 15W40 application.
I sometimes run OCI 5,000 sometimes 6000 and sometimes even 10,000.
I do not want to risk some problem bcs of experimenting with oil that I am not using in my cars since like 1998.