Re: Penzoil synthetic

[Pete]

Below the Mercury PWC 2 stroke 2T oil synthetic ingredients according to the MSDS from the Brunswick Co archives (link below). Lots of +/- in those % specs hard to know what you get ❓ Looks like they use Group III base stock and "if refined enough" it qualifies for a synthetic ❗ Based on the Wall Mart price it is definitely blended for cost control. Group III base oils are sometimes considered full synthetic, but are still classified as highest-top-level mineral-base stocks according to the API. Lots of outboard and auto oils on the market use Group III and blend in other stuff and they get to claim full synthetic to compete in the lower cost category. Not really the same as a pure Group IV PAO base stock synthetic oil. The PWC oil looks like a blend of Group III and IV stock and probably mostly III with a lot of +/- in the brew. Maybe like the cognac difference between Remy Martin XO and Remy Martin Louis XIII, no real comparison once XIII is tasted ❗

Component Name(s) %
Highly-refined petroleum lubricant oils 30 – 60
Distillates (petroleum), hydrotreated light 10 – 30
1-Decene homopolymer, hydrogenated 10 – 30
Polybutene Synthetic 10 – 30
Ester Proprietary 10 – 30
Ingredients Proprietary 1 – 5

Specifics here scan down for PWC 2-STROKE FULL SYNTHETIC (8M0058907 – 8M0058908)

http://download.brunswick-marine.com/do … es=&mod=13

Wasn’t aware of all the products Brunswick makes until this link popped up.