RP High Performance Marine (HPM) 4-stroke

[occity79]

I use and recommend Mystik oils-I've been using these for about 5 years now and am totally satisfied. The easiest way to get these is internet cart to your home!

2nd choice is Pennzoil Marine HD 4 cycle.

My experience-Salt water boater on East Coast Atlantic Ocean and Chesapeake Bay (40+ years).

For a v-8 inboard, try a 15w-40 or straight 30W.

http://www.mystiklubricants.com/do/category/HEAVY_DUTY

 

[oilboy123]

Both RP and Amsoil are NMMA certified oils. "NMMA National Marine Manufacteres Association" I have never used RP oils though. Amsoil has done a ton of advertising in recent years.