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CC230 06-17-2014 10:49 AM

As always great info on this site! I was wondering the same thing as I'm getting ready to install my new 383 in the boat.

mptrimshop 06-18-2014 12:58 AM

So 20w-50 and straight 50 should be the same thing for a boat?

Pismo10 06-19-2014 06:43 PM

So back to the original question--Because it does not need one.

SB 06-19-2014 06:52 PM


Originally Posted by Wes Burmark (Post 4138737)
SB Who in your opinion makes a good SBC block adapter and remote oil filter adapter that will accept 1/2" or #10 AN lines?

Anything Billet...LOL. I use Canton but because they are nearby shipping wise and I've been using them seemingly before Dinosaurs walked this earth. Hard to change an old(er) guy.

CV is a really good company also.

I just don't like cast thing-a-ma-bobs in tough environments.

SB 06-19-2014 06:55 PM


Originally Posted by mptrimshop (Post 4139348)
So 20w-50 and straight 50 should be the same thing for a boat?

Sounds good on paper, but I'll bet a kick in the pants the Straight 50 will be thicker at hot temps.

I don't see a need for anything over straight 40. For multi viscosity - most 20-50's will work and like I always mention, I've done well with Rotella 15-40. It holds pressure well.

As a side note, and so those know especially since I comment on oil and oil pressure, I always remove the factory filter bypass adapter and put in a solid billet adapter with no bypass. I do this on my performance motors....so my experiences always are in this configuration.

mptrimshop 06-19-2014 07:19 PM


Originally Posted by SB (Post 4140521)
Sounds good on paper, but I'll bet a kick in the pants the Straight 50 will be thicker at hot temps.

I don't see a need for anything over straight 40. For multi viscosity - most 20-50's will work and like I always mention, I've done well with Rotella 15-40. It holds pressure well.


As a side note, and so those know especially since I comment on oil and oil pressure, I always remove the factory filter bypass adapter and put in a solid billet adapter with no bypass. I do this on my performance motors....so my experiences always are in this configuration.


I run royal purple 20w-50/ K&N filter. Never had a problem


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