Motor oil for 150hp ProXS

[Bobnfl]

Going to be changing the oil in my outboard at 100hr. and am wondering which oil is the best to run in it. I use Mobile 1 in all my vehicles so I am leaning toward that type of oil. What would be the best for me to use. I put about 50hr./tr on the motor.

Thanks for any guidance.

[EuropeanAM]

Moving your post to the 4-Stroke forum for you.

First and Foremost: Use a MARINE rated engine oil. See your engine owner's manual, and/or the label provided on the engine for oil recommendation.

10w30 Synthetic Blend (Mercury or Quicksilver) would be my recommendation.

[Bobnfl]

Moving your post to the 4-Stroke forum for you.

First and Foremost: Use a MARINE rated engine oil. See your engine owner's manual, and/or the label provided on the engine for oil recommendation.

10w30 Synthetic Blend (Mercury or Quicksilver) would be my recommendation.

Thanks for the input. I was hoping to maybe find a better oil, but if there is none better then I will use what the manual says.

[ifishinxs]

Thanks for the input. I was hoping to maybe find a better oil, but if there is none better then I will use what the manual says.

Mercury synthetic blend is actually one of the best motor oils that you can buy. Its good stuff!

[mactlman]

merc sells a full synthetic also, can use it in a 10-30 some engine builders I know prefer the semi synthetics also best of both oils

[Johnnyred]

My 2021 Merc 150 4S manual says do not use full synthetic. Recommends dino or syn blend.

[goodman_fishing]

Car engines don’t usually sit at 6,000rpm for extended periods.

Buy the Mercury oil.