Does anyone know what type of oil to use in the supercharger on a 525SC?

Wessin, ya BIG DOPE!

yo yo yo yo

My B&M 250 has Redline gear oil in it. It is also recommended to use Merc outdrive oil in the gears. I opted for the Redline as I did not see any need to have additives that will aid in case of water intrusion.

Whipple recommends 5/50 Castrol Syntec in their superchargers.

My Mercruiser Service Manual for the High Performance Engines says to use a good grade 90 wt. gear lube.It also notes that the 525SC has both front and rear oil resevoirs where the 600SC and 800SC have only a front resevoir. On the 525SC fill the front to the level on the dipstick. On the rear, fill until fluid runs out the hole. Hope this helps!

Hammer

Lmarth gives some IMPECCABLE info about two reservoirs... remember the Villian outdrive incident?

Lucas

Thanks for the info guys!!!!!!!!

Would 75w90 Mobile 1 diff fluid be OK?