engine oil

[e21 turbo]

hey guys wassup,i own a e21 m20b25 turbo everything is going great but the only problem is what engine oil is better 2 use,am using castrol 20w/50,,,,,,,is it good???????
the secound thing is what is the better kind of bearings 2 use,my crankshaft is the 325 standerd.....plz help....

[Highboosted]

Synthetics are better resistant to coking on the turbo bearings. Conventionals are better as suspending blow-by acids. If your car sits alot and gets oil changed every 2500 miles, conventional is better. If you drive alot and change your oil every 3K, syntheitic is better. No oil will be good for more then 3K miles on a turbocharged engine, period. My oil gets changed about every 1000 miles lately. I use Mobil 1, 10-30, some people with oil pressure problems switch to 20-50 to bring it up, but thats a bandaid fix for a larger problem.

[Highboosted]

And BTW: You DO have a turbo timer, right? Proper turbo cool down is the most important thing you can do in a turbocharged car besides change the oil often.

[e21 turbo]

hey dude,thanks for your help,but the qest is,doesn't the engine need a thick oil so that the bearings are working better??????
my mechanic tells me to use the liqui molly 10-60??????
and yes i do have a turbo timer and its always set at 2 min.....

[Good & Tight]

The 20-50 is fine dont put anything thicker. I use penzoil 20-50 in my turbo M10 and change the oil every 1500 miles.

[e21 turbo]

thanks guys you have been a great help,am sticking with 20/50 and will change oil more often,,,,,,,