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[Jake Raby]

Originally Posted by Flavor 987S

Jake, I am still planning on buying a case of this DT40 (5W40) from Charles for my yearly oil change next month.

Can you post a VOA? Or at least tell me the levels, in PPM, of your Zinc and Phosphorus? I'm hoping it's about 1,100 PPM for both, and on par with my current Mobil 5W50. Thank you.

Here is the High Temperature High Shear data that we gathered comparing DT40 to M1


My machine and back up drive that has all the VOA and UOA data was struck by lightning last Monday... I'll post both when it comes back online. Lets just say that the zinc levels of the DT40 are greater after 12 hours of on track service with temps north of 250F than what you stated your target would be. No exaggeration.

[Boxster586]

Originally Posted by Jake Raby

Here is the High Temperature High Shear data that we gathered comparing DT40 to M1


My machine and back up drive that has all the VOA and UOA data was struck by lightning last Monday... I'll post both when it comes back online. Lets just say that the zinc levels of the DT40 are greater after 12 hours of on track service with temps north of 250F than what you stated your target would be. No exaggeration.

I'd like to know how it compares to Mobil 1 5W50 as I will not run 0w40 at the track.

Thanks.

[Flavor 987S]

Originally Posted by Boxster586

I'd like to know how it compares to Mobil 1 5W50 as I will not run 0w40 at the track.

Thanks.

Excellent question. I am also running Mobil 5W50 with excellent UOA's (slight improvement over Red Line 5W40). I plan on trying Jake's new oil DT40 for the next 2 years to compare.

[Flavor 987S]

Originally Posted by Jake Raby

Here is the High Temperature High Shear data that we gathered comparing DT40 to M1


My machine and back up drive that has all the VOA and UOA data was struck by lightning last Monday... I'll post both when it comes back online. Lets just say that the zinc levels of the DT40 are greater after 12 hours of on track service with temps north of 250F than what you stated your target would be. No exaggeration.

Thank you, Jake! I'll check back in again in a few days. Sorry your computer got fried.

[Jake Raby]

I'll pat te VOA with UOA from a comparison I recently did that included 5,200 start cycles for one of our M96 engines. I have VOA from that DT40 oil as well as UoA from 739 miles of driving and 75 dyno runs, then data of the same oil after 5,200 starts. We also had a particulate test carried out to see even more about what happens...

This wasn't an oil test, but the evaluation ended up being multifaceted and very informative.