Recent content by penev

Another aspect: I make a lot of differentials (mainly BMW diffs, LSDs, MB...) and noticed the following: Every (open type) differential produced after 2000 is filled with Long Life oil. When I remove the rear cover I see ugly picture. Everytime! Black oiled horror

That's the reason I change ZF6sp after 100 000km

Is it possible for instance VAG long life III to be the same like Castrol edge 5w30?

I think long life is just marketing trick.

I've heard about many little italian cars never changed the oil

Hello men! I want to introduce me and my cars. I'm from Bulgaria, education in engineering. My everyday car is Audi A4 1,9TDI with a lot of modifications, but as before family sedan. The other one is BMW e36 coupe original with 2,5l engine, curently: 3,2L stroker, still without ECU remap, but...