Oil in 502s?

Rcolter · 05-04-2006, 01:00 AM

I am new here but recently purchased a 35 Lightning and was wondering which oil works best in the 502's?

blownincome · 05-04-2006, 05:57 AM

We use the merc multi grade or penzoil 15/40 marine

FOUNTAINIII · 05-04-2006, 07:21 AM

Merc Or Valvoline Both Work Well

Scarab3DMC · 05-04-2006, 08:15 AM

I use merc 20w50

Deltarat · 05-04-2006, 10:02 AM

I use Valoline 20/50 full synthetic in my 502

Rcolter · 05-04-2006, 10:06 AM

Thanks for the help.

Hydrocruiser · 05-05-2006, 06:54 PM

M-1 15W-50 unless racing then M-1 V-Twin or Amsoil Racing Synthetic. A/C...Baldwin..Wix Racing..M-1 oil filters and Amsoil are all great

carney · 05-05-2006, 08:21 PM

straight 40-val works good for me.

ReggieRaft · 05-05-2006, 08:30 PM

I had 200 hours on my 500 mpi's with whipples.Time to have a valve job. so I had a total rebuild from the crank up. anyway to shorten this story I asked if my oil was doing the job? Answer was the inturnals were perfect. That oil was Mobil 1 15 50 .

US1 Fountain · 05-05-2006, 11:22 PM

I always use the Merc oil. I 'think' somewhere I read where their oil has additives to combat the extra moisture marine motors work under. Anyone else hear of this?