Just my opinion/theory. I'm a spec kind of guy. You know, motor cycle oils in motorcycles, truck/diesel oils in diesel trucks, racing oil in race cars, etc.

This site says Amsoil motorcycle oils don't have any friction modifiers. Motorcycle oils are designed to work with wet clutches so they are not ideal for car engines

Make sense, the oil formulators know best and did the rigorous track testing. Zoom-Zoom was this M1 R 4T syn charcoal cap oil in the failed turbo car? Dont recall 4t having a lot of moly FM's. Were other additives tossed in the sump?

guys oil in car is not an motorcycle oil, probably mix of 15w-50 M1 and 10w-40 M1..he would not put motorcycle oil in the car..

Other than the Pb level, thats better than most street car UOA. Highly EP additised stuff. And ELF magic. (Not to be confused with GC Elfen magic ...)

I wonder what Doug Hillary has to say about this one.

Disintegrating turbo material playing havoc down stream?

Install intermediate inline filtration.

turbo oil return line goes back into oil pan so it gets filtered before it goes back into engine.

No, I didn't make it clear. Turbine wheel goes off kilter. Grinds up tones of fine particles that pass through intercooler (if so equipped) grinds up throttle body, intake, valves, pistons on the way out the exhaust. Much ends up on oil from both ends.

It`s trends like this that made me shy away from synthetic engine oil. There`s twin turbo Z owners on tt.net who`ve spun bearings while tracking their car on synths,and then there`s the ones who`ve regularly tracked their cars and have been running Pennzoil yb since new.......while in the 200-300k mile range,still having factory spec compression in all 6 cylinders and still on original turbos.

Maybe there`s no corelation,but it makes me wonder.

hot side failed..cool side was fine so no debris as a result

Splain your opinion.

Hey, there's piston and rods and timing components above the oil pan sump. Stuff get splashed up there and in the oil control rings and scrapers.

First the oil is important as it could be part of the cause....I do not think it is but it could be. Their is a reason why they make race oil's and why big teams have their own oils custom blended for them by companies like Mobil often with a treibologist track side!

I would guess that who ever rebuilt the engine did not do as good of a job as they thought they did! I would also suspect the material issues. Stock pistons do not hold up to race conditions well.

In fact when you build an engine for the track you normally have clearances that are more open then on a street engine. The big differences are the tolerances and the levels of concentricity.A tight engine does not make as much power as a lose engine. On top of that you have bores that are polished to reduce friction no cross hatching for oil control.....

His pistons must sound like a set of jack hammers at RPM with aluminum levels that high! The aluminum and iron and tin and cromium in this case I think are all related to the piston's,rings,wrist pins, and bearing at the big end. If he used silver plated bearing we would have a beter picture of what is from fuel and what is from the lower end in terms of bearing wear.

I don't think even a mix of 15W-50 and the 10W-40 would result in these additive levels.