BimmerFest BMW Forum banner

1 - 3 of 3 Posts

·
Registered
Joined
·
1 Posts
Discussion Starter #1
hello i drive a bmw e39 540i auto, after a recent oil change the oil pressure light comes on only once the engine is hot and the hydraulic lifters are abit noisey. i did a sump service and found that the sump as very dirty , carried out another oil change including filter and it is still doing the same. what could the problem be ?
 

·
Registered
Joined
·
5,550 Posts
put a thicker oil in it or a better brand. sometimes the oil viscosity varies a lot for cheaper brands
 

·
Registered
Joined
·
15,608 Posts
As acoste mentions, the oil weight may be incorrect. What weight and brand did you use? How many kms are on the car?

Measure the oil pressure by connecting a gauge to the oil pressure switch on the filter canister. Pressure should be >8 psi at idle, and 65 psi at 2000 RPM.

You may need to use a solvent to clean the engine. They are designed to be mixed with the oil.

I don't know what's available in S. Africa, but we have a very effective product in the USA called Rislone. You may need more than one treatment.
 
1 - 3 of 3 Posts
Top