best oil for engine with known cam dephaser issues

[shDK]

Hi all.

Just changed out the familly mazda with a new to us Renault megane stationwagon since we where in constant need of the space.

The engine in the Renault do have a verry wellknown issues with faulty cam dephasers.I got it changed together with the cambelt, and waterpump as a part of the deal.

According to the manual You can use any acea a5/b5/a3/b4 between 10-40 5-40 5-30 10-50 engineoil.

My question is. With type do all You experts think would be the best to make my new dephaser last as long as posible? I am leaning towards
5-40 because it was what the car came with from the factory. And the engine runs 3500 rpm at highway speed( 130 km/h)

the Oci is 30.000 km. I however plan on changing every 10.000 km. The engine has done 136.000 km and runs great.

Tanks
Søren

 

[Trav]

I would look at Castrol Edge 0w30. It meets Renault RN0700/0710 spec if thats the spec for your engine or the Castrol Edge 0W40 A3/B4

 

[chrisri]

Castrol recommended by Trav is really great PAO based oil, but it can be pricy. A bit cheaper, but still good is Shell Helix Ultra 5w40.

 

[shDK]

I have used the helix 5w-40 earlyer on other cars with good results. Maybe i should use that next time. I just changed the oil this weekend. I used Elf 900 NF 5w-40 since that is what was the factory fil back in 2007. So far i feel no problems. It runs Quit and Smooth

 

[HerrStig]

It appears the thin oil movement hasn't reached Denmark yet.

 

[shDK]

Originally Posted By: HerrStig
It appears the thin oil movement hasn't reached Denmark yet.


True

 

[4wheeldog]

Originally Posted By: HerrStig
It appears the thin oil movement hasn't reached Denmark yet.


Well.......It can get up to 35C in the Summer, once in a while, don't you know!

 

[shDK]

Originally Posted By: 4wheeldog
Originally Posted By: HerrStig
It appears the thin oil movement hasn't reached Denmark yet.


Well.......It can get up to 35C in the Summer, once in a while, don't you know!


Yeah...ones every 5 years..

I am sorry we as a nation are not as inlighted when it comes to lubrication as you are. Maybe some day we will be.

Meanwhile, excuse me for not using 0-20 in an engine not spec for it.

 

[artificialist]

Originally Posted By: shDK
Originally Posted By: 4wheeldog
Originally Posted By: HerrStig
It appears the thin oil movement hasn't reached Denmark yet.


Well.......It can get up to 35C in the Summer, once in a while, don't you know!


Yeah...ones every 5 years..

I am sorry we as a nation are not as enlighted when it comes to lubrication as you are. Maybe some day we will be.

Meanwhile, excuse me for not using 0-20 in an engine not spec for it.


One thing to remember is that most 0w20 gasoline engines are naturally aspirated. Turbo engines usually call for an Xw30 or Xw40, or benefit from using Xw40 instead of Xw30.
The OP didn't mention exactly what engine he had.

In any case, I am not sure of an oil that benefits engines with badly designed cam phasers. Someone with a Ford 3V 5.4L engine may know of an oil that helps weak cam phasers.

 

[shDK]

Originally Posted By: artificialist
Originally Posted By: shDK
Originally Posted By: 4wheeldog
Originally Posted By: HerrStig
It appears the thin oil movement hasn't reached Denmark yet.


Well.......It can get up to 35C in the Summer, once in a while, don't you know!


Yeah...ones every 5 years..

I am sorry we as a nation are not as enlighted when it comes to lubrication as you are. Maybe some day we will be.

Meanwhile, excuse me for not using 0-20 in an engine not spec for it.


One thing to remember is that most 0w20 gasoline engines are naturally aspirated. Turbo engines usually call for an Xw30 or Xw40, or benefit from using Xw40 instead of Xw30.
The OP didn't mention exactly what engine he had.

In any case, I am not sure of an oil that benefits engines with badly designed cam phasers. Someone with a Ford 3V 5.4L engine may know of an oil that helps weak cam phasers.


My fault. It,s a naturally aspirated 1.6 petrol with 115 DIN hp.

 

[jrmason]

I use a 5w20 in my 3v 4.6 with variable cam timing but that is what Ford recommends.

You listed a 30w, a 40w, and a 50w oil as recommended by the factory. Im assuming these are all temperature dependent, so choose the best viscosity for your climate. The 30w is probably a safe bet for year round use.

 

[shDK]

Originally Posted By: jrmason
I use a 5w20 in my 3v 4.6 with variable cam timing but that is what Ford recommends.

You listed a 30w, a 40w, and a 50w oil as recommended by the factory. Im assuming these are all temperature dependent, so choose the best viscosity for your climate. The 30w is probably a safe bet for year round use.


The are. Both 5-30 and 5-40 are down to -30 celsius.

 

[jrmason]

Both are recommended by the manufacture down to those temps? No doubt about 5w40 being good in cold weather, I have ran it in my diesels down to -39f. I would be surprised if it was recommended in anything with VCT down to those temps but I know nothing about your application. I'm solely basing my VCT experience from the Ford modulars which is a finicky design at best.

 

[shDK]

Yes, both are down to the same minimum temp. That is also why i am leaning towards the 5-40. Or atleast a b4 5-30

 

[Oil Changer]

Relax. I'm pretty sure that was meant as a joke.

Originally Posted By: shDK
Originally Posted By: 4wheeldog
Originally Posted By: HerrStig
It appears the thin oil movement hasn't reached Denmark yet.


Well.......It can get up to 35C in the Summer, once in a while, don't you know!


Yeah...ones every 5 years..

I am sorry we as a nation are not as inlighted when it comes to lubrication as you are. Maybe some day we will be.

Meanwhile, excuse me for not using 0-20 in an engine not spec for it.

 

[shDK]

Originally Posted By: Oil Changer
Relax. I'm pretty sure that was meant as a joke.

Originally Posted By: shDK
Originally Posted By: 4wheeldog
Originally Posted By: HerrStig
It appears the thin oil movement hasn't reached Denmark yet.


Well.......It can get up to 35C in the Summer, once in a while, don't you know!


I am totally ralaxed. I am sure it was a joke aswell. And so was my reply

Yeah...ones every 5 years..

I am sorry we as a nation are not as inlighted when it comes to lubrication as you are. Maybe some day we will be.

Meanwhile, excuse me for not using 0-20 in an engine not spec for it.

 

[Shannow]

Originally Posted By: jrmason
I use a 5w20 in my 3v 4.6 with variable cam timing but that is what Ford recommends.


I'm somewhat sure that your Ford engineers didn't design the Renault engine, in the OP's vehicle, but I may be corrected if you've got other data.

Originally Posted By: HerrStig
It appears the thin oil movement hasn't reached Denmark yet.


When the US drops CAFE, and the US consumers embrace 20,000 mile oil changes that may well change.

 

[Olas]

Don't use oil to mask a mechanical fault, fix the fault! Either map out the dephaser function or replace with a standard/aftermarket cam

 

[jrmason]

Originally Posted By: Shannow
Originally Posted By: jrmason
I use a 5w20 in my 3v 4.6 with variable cam timing but that is what Ford recommends.


I'm somewhat sure that your Ford engineers didn't design the Renault engine, in the OP's vehicle, but I may be corrected if you've got other data.

Originally Posted By: HerrStig
It appears the thin oil movement hasn't reached Denmark yet.


When the US drops CAFE, and the US consumers embrace 20,000 mile oil changes that may well change.


What's your point? I never said he should run a 20w. Maybe you should quote the rest of my posts for the rest of the story.
And for the record, I do 15k intervals on a regular basis with 20w. I could easily surpass the 20k mark according to my UOA i still have 25% of the TBN I started with and my wear metals always come back very low but for the cost of performing an extra UOA its easier to dump it at 15k. My TDI has sheared the 9000 40w I use by 15k miles and is close to being done. Both 20w and 40w are 9000 Supreme, full synthetic. I run a 40w in my high performance V twin when all my buddies are running 50w and guess what, the 40w comes back with excellent results. Just because its heavier does not mean its superior.

 

[shDK]

Originally Posted By: Olas
Don't use oil to mask a mechanical fault, fix the fault! Either map out the dephaser function or replace with a standard/aftermarket cam


That ain't gonna happen.