Thread: what weight of oil?

what about 0w20? for the big 8? I can get 8 quarts of Royal Purple 0w20 off the shelf here..

lubro moly 5w-40. Best oil i've used so far and it works great all year around for the type of weather we get here in vancouver. Quote: Originally Posted by struka I use Royal Purple 20w50 with a little extra oil (half to a quart) what do you mean by a little extra?

Quote: Originally Posted by Jbaroli I´d use Castrol RS 10w60 if your engine is in good running condition (no oil burn). Or 5w50 Mobil 1if it´s in great condition. 10w60! That's like molasses. I'm running 10w-40.

Mobil 1 5w/50 would be pretty hard to find in the states. For hot AZ weather use Valvoline synthetic 20w/50 or Mobil 1 15w/50.

0w40 or 10w40 should be okay

I used to run 20w50 M1. After talking the shop owner that did my e30s52 swap (also does alot of race prep work, and maintance for the Lane Motor Musium) he had switched to a lighter oil 10w40/10w30 M1. Most, if not all VANOS clogging failures he worked on were only on motors that ran heavy weight oils 15w/20w50 +, his shop does work on other makes besides BMW, but more than 95% are BMW. I run 10w30 now.

I use Chevron Delo 15w40.

Quote: Originally Posted by jehu There was a lengthy article posted here recently about oil where the author over and over made the assertion the only thing that makes any sense is use the thinnest full synthetic oil you can obtain in order to have the most protection for moving metal parts at cold start ups... True. But I'm not sure how well known the meaning of the viscosity figures are in general on this forum. On other forums the...

its a 525i and i live in arizona so i understand i need to use some different weight oil?

I´d use Castrol RS 10w60 if your engine is in good running condition (no oil burn). Or 5w50 Mobil 1if it´s in great condition.