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Best oil used for a Graymarine 4-cylinder? |
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8122pbrainard 
Grand Poobah 
Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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 Topic: Best oil used for a Graymarine 4-cylinder?Posted: August-08-2014 at 9:38pm |
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A 56 should have never been run on a non detergent.
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TRBenj
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Joined: June-29-2005 Location: NWCT Status: Offline Points: 21186 |
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Posted: August-08-2014 at 11:39am |
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If it has sludge build up, I'd say so... The detergent might free it up and circulate it. If no sludge, no reason to stick with non-detergent.
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Riley
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Joined: January-19-2004 Location: Portland, ME Status: Offline Points: 7954 |
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Posted: August-08-2014 at 10:47am |
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Isn't it bad to change over to a detergent oil in an old engine that has always had non detergent?
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: August-08-2014 at 3:25am |
A non detergent has NEVER been recommended. I and hundreds of my fellow ACBS members have no issues. They created detergent oil for a reason!! |
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NCH20SKIER
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Joined: December-16-2004 Location: United States Status: Offline Points: 2207 |
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Posted: August-08-2014 at 12:37am |
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I am not sure as my buddy that restores the oldies has a 50 gallon drum (think it is Napa) that filled up a 2 gallon can for me.
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'05 206 Limited
'88 BFN |
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crabman
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Joined: March-05-2013 Location: Three Rivers Status: Offline Points: 216 |
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Posted: August-07-2014 at 11:54pm |
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What brand do you use? I have a friend that has Caviler also, not a 100% sure of the year though, I believe it was in the 60's though. Bradpenn got back with me and need to call the rep back tomorrow about it.
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NCH20SKIER
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Joined: December-16-2004 Location: United States Status: Offline Points: 2207 |
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Posted: August-07-2014 at 11:43pm |
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So I am not sure about the Gray Marine 4 but I run non detergent 30 weight in my 4 cyl Hercules (1956 Chris Craft). In my boat the engine oil also serves the transmission and anything with detergent or synthetic will do no favors to the transmission clutches.
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'05 206 Limited
'88 BFN |
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crabman
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Joined: March-05-2013 Location: Three Rivers Status: Offline Points: 216 |
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Posted: August-07-2014 at 11:13pm |
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I was really thinking I needed to run a little higher Zinc and Phosphorus levels then normal. Just out of curiosity have you ever sent your oil samples to blackstone?
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: August-07-2014 at 4:22am |
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I run VR1 20=50 in all my engines.
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crabman
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Posted: August-07-2014 at 12:53am |
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I know not another oil thread, but was wondering what most were using? Opinions wanted
 I was thinking about going with BradPenn. http://www.penngrade1.com/ |
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NCH20SKIER wrote: