1997 Merc 150 EFI

[Dennyg]

I'm coming up on 800 hours on my Merc outboard, serial no. 0G508578. For the last 10-15 years I've used Pennzoil XLF oil and Stabil 360 fuel treatment.
Never have had any problems with the performance of the engine, except for a few repalcement parts. Is there any reason to change now that the engine is
getting more hours on it? Or add any other additives?

[leonreno]

In faq section there is fuel cocktail for keeping the motor cylinders cleaner and/or stabilizing the fuel. I use it, many other do too. But it’s your call.

[JOE54]

In faq section there is fuel cocktail for keeping the motor cylinders cleaner and/or stabilizing the fuel. I use it, many other do too. But it’s your call.

^^^^^+1