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Old 11-14-2019, 07:55 PM
Alex E Alex E is offline
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Join Date: Apr 2019
Location: NYC
Posts: 86
The diesel lubricity additive study Diesel911 mentions and linked in the second post of this thread really is an eye opener. Click it and read.

My first diesel was a brand new '86 Jetta (non turbo). At the time I did a lot of work for Stanadyne (photography), they had a tremendous R&D Department with water dynamometers as far as the eye could see!
The engineers said they have patents on their Performance Formula diesel additive and "It is the best". I used it faithfully in that car until it completely rotted away at 350,000 miles on the original pump and injectors.

After reading the lubricity additive study a few years ago where Stanadyne Performance Formula scores well but not the best I switched to Opti Lube XPD and the Walmart 2-stroke oil in my Chevy 6.5 and '83 300CD. I'm happy using that double whammy additional lubrication to today's dry fuel.
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