oil change

[bimmer_E30]

castrol
20w50 for the M20.

[whiltebeitel]

No, synthetic is pointless in a motor that was designed before synthetics came out. Ur just throwing money away

Sorry, but synthetic doesn't break down nearly as fast and holds up to greater stress/temp ranges than equivalent conventionals. Additives last longer in synthetic oils as well. "modern" engines that run synthetic only have longer change intervals and maintain closer tolerances because they can use a thinner synthetic to get the same heat protection and lubrication.

[retardotyler]

s

[30secE30]

thanks guys i ended up putting 20w/50 in my e30 it runs great

[StereoInstaller1]

I just did a change to Delo 15-40.

Nice and quiet, I will see how it hold up as I only have 3 more changes before 300,000

[rThor432]

Too thin. 20w-50 or 15w-50 on M20 with that kind of mileage.

Plus one.

And plus one to the "nothing less than 10w40" comment as well.

[Rennsport]

dude, sythetics "came out" in the 1940's.

Really

No shit, i ment as far as being used in engines by auto manufactures.

[SpecM]

No, synthetic is pointless in a motor that was designed before synthetics came out. Ur just throwing money away

dude, sythetics "came out" in the 1940's.

Really

[Rennsport]

No, synthetic is pointless in a motor that was designed before synthetics came out. Ur just throwing money away

[B. Tyler]

What weight would you guys recommend for an m42 with 113k on it? synthetic or not?

[SpecM]

mobile 1 has a 15w-50 that works very well in m20s

5w-20, even 10w-30 is too thin

the Mobile One part for the filter is M1-205 btw

[payney8]

10w/40 minimum

[moatilliatta]

castrol has a 10w30 synthetic

[E30 Wagen]

i would stick with synthetic then.

+1 on running 15-50, during the summer at least. I'd say that 10w-40 would be safe too.

[30secE30]

but i been using synthetic since i got my car isnt it bad to change it back to conventional?