Oil changes! (Again!)

Originally Posted by robertobaggio20

Why dino ?

Because that is what was widely available at the time.

Originally Posted by paperplane94

Because that is what was widely available at the time.

I really don't think that ff recommends dino simply because that was what was widely available in the early 1990s.

Because synth was not available when the car was built and the engine was not designed for it.

Originally Posted by BMWFatherFigure

Because synth was not available when the car was built and the engine was not designed for it.

We are talking late 1980s m20 and the m50 nv and vanos motor that emerge in late 1990 onwards.

In any case, this is interesting. What are the key differences between engines designed for synthetic and non synthetic ? Not the stuff that I can read online, but what you've seen in your practice as being the differences that made the difference.

Thank you sir.



rgds,
Roberto

p.s. pp94, I stand corrected.

I do not know of any design differences, unless we are going way back before these cars were built. I see no reason not to use oil that is proven to perform better in the cold and the hot. Oil that has greater shear strength and better additives. I have never seen a car develop leaks when swtiched to synthetic, just my experience but, I have done it to a couple dozen vehicles.

At the end of the day, engines almost never fail due to oil anymore and, oil is almost never a performance improver.

Ask Castrol. I went to a 'trade' lecture on their products. They say use the oil recomended in the hand book for the vehicle. I.E. My R50 is OK with synth but my E30 runs dino. I'm sure their R&D is accurate, even though their synth is twice the dino price.