F/I engine oil weight choice?

[najnad]

I don't want to get into a discussion of oil brands. What oil weight are you using in your forced induction engine?

I have an E36 M3 with stage II AA Twinscrew supercharger daily driver, no track time. I am thinking either 0w-40 or 5w-50...the 0w-40 is what is recommended for the stock engine, is that sufficient or should a F/I engine use different weight oil than a N/A engine?

Looking forward to what others have to say.


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[Butters Stoch]

M1 0-40 euro spec

[e30kid89]

M1 0-40 euro spec

Aka the unicorn tesrs oil. Down there do you guys have bigger than the qt bottles there in stores?

[Butters Stoch]

Aka the unicorn tesrs oil. Down there do you guys have bigger than the qt bottles there in stores?

We can get 5qt jugs. I think even walmart carries it.

[m3mods]

How many miles are on your motor and what are the current temps (highs and lows)?

- - - Updated - - -

Ambient temps that is..

[dcvee]

40w under 40deg. 50 over it. Adjust your lower number to your average LOWEST temp. In EC, MD, I'd run 10-40 in winter/late fall, 15-50 late spring/early fall. Just take it easy until the oil warms up....thoroughly.

Don

[m3mods]

40w under 40deg. 50 over it. Adjust your lower number to your average LOWEST temp. In EC, MD, I'd run 10-40 in winter/late fall, 15-50 late spring/early fall. Just take it easy until the oil warms up....thoroughly.

Don

That's about what I was going to recommend as well unless it is a fully rebuilt from the ground up motor (which I am assuming its not) in which case I would go with a bit lighter weight.

[TheJuggernaut]

I would go with the lightest weight oil that gets you good oil pressure under your operating conditions.

[swapper]

Liqui Moly 10w-60

[NOTORIOUS VR]

Liqui 5W-40 here... been using it on all my cars for the better part of 10 years now

[Arctic///M3]

m1 15w50 for summer

[rf900rkw]

If you are running a proper thermostat controlled oil cooler, the ambient temp should not play a significant role in choosing the hot weight. But since I don't have a cooler, I've been running Liquimoly 10W60.

[black bnr32]

0w-delicious
bacon fat oil

[Inicent Child]

Another Liqui Moly 10w-60 here..

the lighter weights oil's just don't seem to cut it.

[cdmbmw]

Another Liqui Moly 10w-60 here..

the lighter weights oil's just don't seem to cut it.

Maybe not in hot Cali, but here in Canada we might want to choose a lighter weight oil like 5-40 or 0-40..

[NOTORIOUS VR]

Another Liqui Moly 10w-60 here..

the lighter weights oil's just don't seem to cut it.

How did you come to that conclusion?

[dohcdoh]

How did you come to that conclusion?

Same way he came to the spelling of innocent.

[E36 HateR]

I run 5w40 rotella t6

[futureroadracer]

I run 5w40 rotella t6

I run T6 in just about everything.

[rf900rkw]

Randy: really, no oil cooler? I'll hook you up with an adapter if you want to go with the S-54 filter housing.

Nope, no cooler as yet. The way my car gets used, the bigger problem is cold oil. By the time it's up to temp, I'm at my destination. And the bit of hooning it does see is short bursts. For *my* usage, I"ve been watching for an OE oil->water cooler I can adapt to my appllcation.

[najnad]

Thanks for the advice all. I am going to go with M1 0w-40 euro spec for this oil change and see how it does. Will update if it doesnt work out.

[NOTORIOUS VR]

Thanks for the advice all. I am going to go with M1 0w-40 euro spec for this oil change and see how it does. Will update if it doesnt work out.

You will be fine, M1 0W-40 is good oil with a great additive pack.

[B3 DRIFT]

10-60 here in UK conditions

[pMak26]

I run 5w40 rotella t6

Do you run a cooler too? Do you have an oil temp gauge?

Thanks!

[NOTORIOUS VR]

10-60 here in UK conditions

Isn't that a little thick for cool and rainy? :P