I am sure this has been asked before. But what weight and brand oil you running in your motors. I have twin bbc with small 177s

Just curious

Steve

I ran Mobil 1 15w-50 in my 525SC. It had almost 500hrs on the bottom end when I sold the boat. No issues and used a qt every 25hrs.

Brad Penn 20-50

Valvoline VR1 Racing 20-50 with a NAPA platinum filter, Whippled 509.

Valvoline VR1 Racing 20-50, K&N Filter, 875-900 HP 509 with 1071 Blowers. On my Old Top Gun. 15 Hour Oil Changes.

Valvoline VR1 Racing 20-50, run same oil in my 500efi's for the Playboy

454, B&M 250, Quicksilver V-Twin 20-50 synthetic motorcycle oil. New engine, new oil. We'll see how she does.

You are aware it will only fire two cylinder's, right ?? V twin.... I run that in my Harley, whats up with it in a boat engine ??

New motor and builder said to use 20w50 Castrol with WIX racing filter (don't remember the number). Next time I change may go to something else, maybe synthetic.

Woops, never mind no blower here

Most important thing is you put oil in it. Next is you change it.

Best response. Especially with blower motors. I had chiefs originally in the Top Gun. I asked Tommy what oil I should run. He said conventional Valvoline 20/50. It has good zinc properties. and the most important thing is change it every 15 hrs and monitor the level.

Since then, I have always run Valvoline, they came out with the VR1 race oil since then in conventional, I run that now because it has even more zinc. I don't have blower motors so I go 20-25 hours. Usually, half way through the summer I change it, and change it before I put it away.

Blower Motors oil should be changed frequently because you are forcing fuel with pressure down the cylinder walls more and it dilutes the oil. Gasoline thinned oil on high RPM engines are not good on parts.