Help me in my Oil Debate

[Jeffs2006EvoIX]

Originally Posted By: bluesubie
Mobil1 recommends their 0W-40 for street cars that see the track. Although I'm curious to see how M1 5W-30 GF5 would hold up in a turbo. Just can't find any guinea pigs to do uoa's..

Subaru recently dropped the thicker viscosity recommendations from their manuals, but a lot of new WRX owner's are still running Rotell T6 5W-40. In one case, a guy went to the dealer for a misfire code. The dealer said the RT6 was causing the misfire (even though there were no changes to the engine), drained the Rotella, and charged the guy $100 for an oil change. Of course, his misfire returned.

If I ran 5W-30, I think I would go with one that has an HTHS of 3.5 or higher. One option is Max Life Full Synthetic, which bourne mentioned above, but I've never seen it. Motul X-clean is another. And who says you're "required" to follow a "recommendation" anyway?

Well I have done UOA's on my previous Evo 9 using M1 10/30 EP and they are up on the site somewhere. I will have o look for them. The M1 held up well. The only reason I switched to other oils were my needs changed. When I was running meth/water injection and pushing 430 at the wheels I was running 10w40 Royal Purple XPR which is formulated for use with water/meth. When I pulled the water/meth and switched back to 91 pump but chose some new bolt on mods I used the Redline 5w30 to suit those mods.

As for the use of what Mits recommends isn't really my issue. Its the fact that in some markets the same exact car with same exact engine gets 0w40 instead of 5w30 so it gave me a mmmmmm momment. I was thinking, that maybe just maybe the 0w40 M1 would be so similar to redline 5w30 that it would be worth a shot while saving a few bucks. Hope that makes sense? I just have no experience with any 0w oil or M1's 0w40. Is why I am here to inquire

Jeff




-Dennis

 

[toneydoc]

Castrol Edge with Syntec 5w30

 

[Leo]

I had a similar dilemma with my 08 evo x. I ended up going M1 0w-40 SN as it's the best bang for buck synthetic that's easily available and worked out almost half the cost of boutique oils such as redline or motul 300v. The 0w-40 is a light 40wt (ideal hths for a turbo 4) with a stronger additive package vs other m1 grades and carries plenty of approvals for engines even more complex than ours. With the 0w-40 its just set and forget; its a great oil.

 

[Garak]

Originally Posted By: Jeffs2006EvoIX
So folks in MI, USA are told 5w30 but across the lakes in CAN they get 0w40? Same car, same engine. That's why I'm confused.


Join the club.

It's certainly not uncommon for automakers to specify different oils in different countries. It is odd, however, for them to specify a 0w-40 in Canada and 5w-30 in the States. Under warranty, if I were the owner of the vehicle in the States, I'd follow the 5w-30 requirement, unless you can get the manufacturer to agree otherwise. You could see what the Mobil 1 site recommends for your vehicle, too.

 

[Jeffs2006EvoIX]

Originally Posted By: Leo
I had a similar dilemma with my 08 evo x. I ended up going M1 0w-40 SN as it's the best bang for buck synthetic that's easily available and worked out almost half the cost of boutique oils such as redline or motul 300v. The 0w-40 is a light 40wt (ideal hths for a turbo 4) with a stronger additive package vs other m1 grades and carries plenty of approvals for engines even more complex than ours. With the 0w-40 its just set and forget; its a great oil.


Thanks for your reply. What did Mitsubishi specify for the Evo X in your country? I'm just curious. Austrailia has heat that is similar to were I live. So curious for what they spec'd for there.

Jeff

 

[Jeffs2006EvoIX]

Originally Posted By: Garak
Originally Posted By: Jeffs2006EvoIX
So folks in MI, USA are told 5w30 but across the lakes in CAN they get 0w40? Same car, same engine. That's why I'm confused.


Join the club.

It's certainly not uncommon for automakers to specify different oils in different countries. It is odd, however, for them to specify a 0w-40 in Canada and 5w-30 in the States. Under warranty, if I were the owner of the vehicle in the States, I'd follow the 5w-30 requirement, unless you can get the manufacturer to agree otherwise. You could see what the Mobil 1 site recommends for your vehicle, too.


M1 site shows 5w30. I just wonder how Mits could void a warranty on an oil that they honor in a diferent country?

When I get a chance I will post the mits service poster for Canada that someone on an Evo forum posted. Says to use either 0w30 or 0w40. But in the USA 5w30? Weird. Haha

 

[artificialist]

Actually in my 2010 manual, it says "Below freezing use 0w30 or 0w40"

So I guess you could use M1 0w40 and have no problems with the warranty.

The other reason I used 10w30 is because unless Mitsubishi specifically asks for extreme cold temperature tests, the oil will be tested at 40C and 100C, and the numbers will be extremely close to 5w30.

I think in some extremely fine print somewhere 10w30 was okay if temperatures were 100F. It doesn't reach 100F in Florida but it gets close.

 

[Jeffs2006EvoIX]

Originally Posted By: artificialist
Actually in my 2010 manual, it says "Below freezing use 0w30 or 0w40"

So I guess you could use M1 0w40 and have no problems with the warranty.

The other reason I used 10w30 is because unless Mitsubishi specifically asks for extreme cold temperature tests, the oil will be tested at 40C and 100C, and the numbers will be extremely close to 5w30.

I think in some extremely fine print somewhere 10w30 was okay if temperatures were 100F. It doesn't reach 100F in Florida but it gets close.


Very interesting. I will refer to the manual again and see if I can find that. So Mitsubishi is just wanting to use the 0w for freezing weather? I believe the M1 0w40 is one of M1's top shelf oils. I have used the 10w30 in my previous Evo's but mods and running up to 26psi of boost wanted me to use something a little more robust. In this New Evo though, I am sure the 5w30 would be fine, but if I can have something just that much better and its sitting right next to the M1 5w30 on the shelf, then why not use it? I guess thats what I am getting at haha. Would the 0w40 in the performance realm be worth the extram money vs the 5w30 M1? I just have notices as compared to the redline I have used, and I have posted on this site VOA's of Redline 5w30, the ZDDP content, and HTHS of the Redline and M1 0w40 are so similar that it makes me think a little bit more. I do like how Redline and its Group 5 base stocks have very good if not the best heat tolerence of any multi weight oil out there, but for the money, in my particular application, and doing my first oil change any day now, is the 0w40 the right choice? So far I say Yes...still looking out there for other veiws.

Decisions Decisions...haha

Jeff

 

[Garak]

Well, Red Line is certainly good oil, but it may not meet the API and ILSAC certifications you require. As for different weights in different countries, like I said before, it's not uncommon, though the Canada/U.S. split is. I suspect manufacturers have given grief on warranty claims when the wrong oil is used, even when it is permissible in another country. Yeah, it's silly, but life is silly.

If it were me, I'd run something like M1 5-30 until you see different from the manufacturer in writing.