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The 5w40 Euro and 5w40’supercar are the same oil and same price. The 0w40 supercar is different and costs more to make.

I apologize for missing your email. Thank you for those who chimed in. David

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Unfortunately the X-Tracs are sealed and you don’t get to look at the parts. The sample data is pretty good. Typically 40-70 ppm iron. David

Absolutely not. It will work extremely well. This series of oil has a great track record literally. It routinely runs 300F in circles at 200 mph on the weekends David

With respect to LSPI Calcium - Negative to formula Magnesium - Neutral to formula Molybdenum - Positive to formula ZDDP - Positive to formula

We do make a small engine oil that has more additives for the heat from air cooled engines. David

I would venture to say that your oil (stored in the noted ideal conditions) would see little if any degradation. David

Keep in mind with API SM being the beginning for a reduced additive concentration you would expect to see lighter colored oil from there on. Lighter does not necessarily = better I would bet you store your oil in a location that does not see sunlight. The lack of UV protection of the clear...

Although the Rotella did foam in this instance I would tend to believe that this is an exception not the rule. I would think that if we were to test multiple batches it would probably not foam like that consistently. I’m not implying I will do that. We spend our time on our own products to be...

Of the Amsoil products we have run I don’t ever recall seeing them foam.

Yes. If it foams it does not ship. These devices also have a camera. Every batch of oil has a video recording documenting foam or lack there of that is associated with the batch number. We helped the manufacturer of the equipment, develop debug and perfect these devices. They were originally...

This is likely why WWillson saw bits and pieces of carbon in his filter for a long length of time in his Durango.

I can tell you there is nothing better than working with Dr Rudnick. Although it creates a lot of pressure between your ears trying to keep up. And lastly you will never find a better mentor. David

I have not had a chance to watch the video in his entirety. However, I did think he mentioned some sort of disclaimer that in the absence of the reference data this is worth considering I think we all understand it is a generalization not a hard set of numbers we did look at, these materials on...

Funny you should say that. Ron Hoetles who owned Sesco actually did that not only in line he also did a 2 x 4 Sesco, which was a V4 arrangement. Ron is truly a brilliant man I was with him one time his Dyno was in his basement and rumor has It he vented the exhaust into the sewer and one day...

The Stanton Mopar is actually midget engine. You’re looking at four cylinders not eight. The Kistler and the Rider are small black Chevy based in the majority of these engines still have 23° heads

Johnny is a great announcer with tremendous knowledge of the people in the sport

I’m not sure if you get to the track on the west coast or not but we have Cory Day, Justin Sanders, and Cole Macedo in Tarlton’s car running out there.