Originally Posted By: mbacfp
Generally speaking, is this product better used in oils with Zinc and Phosphorous levels less than 1,000 ppm? Don't want to compete with Zinc if the host oil has "adequate" amounts. Appreciate the discussion and advice.
Hyper Lube ZRA is still effective in high-ZDDP oils. Its due to the lowered temperature of activation of the protective tribofilm, reported by:
http://vento.com.vn/docs/en/Surfactants/Lubricant additive/Lubricant Additive.pdf
... and in JAG's reference:
Originally Posted By: JAG
I use it too. Polymer esters are fascinating.
https://books.google.com/books?id=9YXRBQ...ear&f=false
Basically, ZDDP alone in oil needs a lot of heat and pressure to activate, and polymer esters help out by starting to work at colder temperatures, like during the important engine start-up phase.
Originally Posted By: MolaKule
Originally Posted By: jakewells
any problem using the whole bottle with 5 qts of oil?
One has to not overtreat as it could compete with the ZDDP AW additive. At 1 oz per quart, it is synergistic with ZDDP.