What oil do YOU use?

[Jaxx_]

GTX crap turns black in a month

please don't tell me you check your oil life based on the color.

[603Racing]

**edited to correct Rotella weight** 5Toes caught my sleep deprived error.



I use Brad Penn 20/50 in my '83 635 Euro race car. I have a jug of Rotella 15/40 for my e30. I may just start using Brad Penn for it after the Rotella is gone.

Good article on Engine Oil for older motors:

http://www.lnengineering.com/oil.html

[SkiFree]

An easy to understand write up on ZDDP I came across over the weekend. A good read for those unfamiliar ....

http://www.ttalk.info/Zddp.htm

[nando]

but hey, does anyone else at least use that thermometer thats in the drivers handbook?

considering that thermometer was based on 1980's oil technology - no.

[nando]

No kidding, up here 20w50 mobil 1 is near $13 a quart!!

dude, have you ever been to walmart? 5 quarts of 15w50 is only $24. :p

[Fleksta]

Usually Liqui Moly 10w40, Rotella otherwise.

[5Toes]

Rotella here, and people call me crazy...

[accident]

I run this in my E36:

[MR 325]

Penzoil, are you serious? I wouldn't run that in ANYTHING.

[ROLLingKING]

So i got back in town and double checked. im running

Penzoil High Milage 10w40. Penzoil is good enough for me.

Ill probably stick with this weight till spring/summer

but hey, does anyone else at least use that thermometer thats in the drivers handbook?

[LowR3V'in]

For non synthetic vr1 takes it well and it's cheap.

GTX crap turns black in a month probably not cam friendly either.

[long tall eta]

kendall 15/40 year round. thick enough for the summer and thin enough for the winter.

[sweet6e30]

gulf 10w60 racing, motul 300v 15w50, or mobil 1 15w50 all SYN's

I run these in my M20 and SR

all are great oils, ive heard great things about the Rotella aswell

[M-technik-3]

I run Valvoline VR1 in my S14's and I use Shell Rotella in S5X engines.

[Bearmw]

What's the deal with the high mileage versions? I guess they have chemicals that magicaly breakdown the seal material and cause it to swell somehow slowing leaks. What else are they purported to do and how? Anyone know how this actually works and if these are used long term will they actually cause the seal material to breakdown any faster than it already has? The high mileage name sounds enticing for obvious reasons but what is the actual science behind the marketing?