Synthetic for an older motor?

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07-01-2010 | 02:35 PM

#11

kreed

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Joined: Feb 2008

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From: Connecticut

My engine builder told me to use Joe Gibbs Racing oil. expensive oil change, but cheaper than broken/worn parts!

07-01-2010 | 03:01 PM

#12

stevesxm

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From: sint maarten

Quote:

Originally Posted by teaguecustommarine

We recommend AMSOIL 15w-50 DOMINATOR. This oil was specifically designed for a marine application. Many other Synthetic oils are just too slippery and can/will do bad things over time. I say stick to a good straight racing oil OR you wont go wrong with the AMSOIL Dominator or the Mercury Synthetic! -Eric

TEAGUE CUSTOM MARINE
661.295.7000
www.teaguecustommarine.com

too slippery ? can you give a example of a negative outcome from that ?

07-01-2010 | 06:12 PM

#13

CNC

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From: Ludington, Mi.

Quote:

Originally Posted by kreed

My engine builder told me to use Joe Gibbs Racing oil. expensive oil change, but cheaper than broken/worn parts!

I went with Brad Penn Semi-Syn (http://www.bradpennracing.com/)
20w-50. At half the price.

Randy

07-01-2010 | 06:52 PM

#14

formula 382 sr-1

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From: Chesapeake Bay

Quote:

Originally Posted by stevesxm

too slippery ? can you give a example of a negative outcome from that ?

The roller lifter skids across the lobe it does not roll., A bad thing.

07-01-2010 | 07:46 PM

#15

AO31

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From: North Barrington

Quote:

Originally Posted by CNC

I went with Brad Penn Semi-Syn (http://www.bradpennracing.com/)
20w-50. At half the price.

Randy

I like Brad Penn also.

07-02-2010 | 06:32 AM

#16

ezstriper

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Joined: Nov 2005

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From: Fredericksburg, Va

If a roller lifter did that it was not from oil being to slippery..your junk is junk...

07-02-2010 | 08:21 AM

#17

Knot 4 Me

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Joined: Jun 2005

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From: Central IL

I've used Mobil 1 15W50 in marine motors with roller cams since '99. Not one issue with it being too slick and flat spotting the rollers on the lifters. Amsoil claims their product is superior to Mobil 1, yet provides more friction in the motor so the rollers on the lifters don't slide. Say again? More friction = better oil?

07-02-2010 | 08:35 AM

#18

Ted G

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Joined: Jan 2001

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From: Edgerock Baby!!

Quote:

Originally Posted by formula 382 sr-1

The roller lifter skids across the lobe it does not roll., A bad thing.

Pretty sure that is an urban legend. No one has ever published a study or even more than anecdotes about that happening. GM has a few problems with rollers in the lifters early on and the would seize and flat spot or wear through. But if synthetic was a problem with rollers there would be a whole bunch of dead Corvettes, etc. out there.

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07-02-2010 | 08:46 AM

#19

money455

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From: st.paul , mn

my two cents , is i have switched some newer higher horsepower vette and mustang engines to synthetic and been burned by leaks that were not there with good conventional oil . my point being that when switched back no leak . everybody has a opinon i run 15w 40 rotella t with nothing but great things to say about it plus whole lot cheaper than syn. also i change oil more often than i should cause it makes me feel better !