Oil Starvation

[Jake Raby]

All these items treat symptoms, they do nothing for the underlying conditions that are the root of the true problem.

[Fyeganeh]

Originally Posted by Jake Raby

All these items treat symptoms, they do nothing for the underlying conditions that are the root of the true problem.

I assume you mean the root problem is many oils losing viscosity at high temps whereas Driven DT40 and the xp9 racing oil not doing so. I believe you don't think it has as much to do with lateral g-forces. (I have switched to DT40).

But my question is in a 15 year old car does the piston actually wear out/break and need replacing so as to prevent damage? Is it designed to last 15-20-30+ years?

Thanks,
Fred

[Qmulus]

Originally Posted by Fyeganeh

I assume you mean the root problem is many oils losing viscosity at high temps whereas Driven DT40 and the xp9 racing oil not doing so. I believe you don't think it has as much to do with lateral g-forces. (I have switched to DT40).

But my question is in a 15 year old car does the piston actually wear out/break and need replacing so as to prevent damage? Is it designed to last 15-20-30+ years?

Thanks,
Fred

The piston doesn't wear out, but the original is more prone to jamming in the bore, leading loss of pressure than the updated replacement. The question is whether the piston jams in the bore, resulting in bearing damage, etc., or if debris going through the oil pump and through the oil pressure regulator (relief piston), causes it to stick.

[Jake Raby]

The failure of the pressure relief system is very rare. The only time I have seen this lead to issues is when the pressure relief valve spring snaps in half (Mode of Failure #17).

The biggest issue is heat being absorbed by the clutch, passing through the flywheel, then heating up the rear main bearing. This leads to shear and wear, then wear debris of the rear main contaminating the rod journals of cylinders 3/6, leading to bearing failure.