1990 Force 150HP and synthetic oil

Macattack

Seaman
Joined
Mar 22, 2003
Messages
62
I've read past posts about synthetic oil and I'm left confused. Will a blend or 100% synthetic oil do harm to my Force 150?
 

roscoe

Supreme Mariner
Joined
Oct 30, 2002
Messages
21,657
Re: 1990 Force 150HP and synthetic oil

No.<br /><br />All the rantings on the petroleum/synthetic debate are over which is best, which seems to be a matter of opinion and contradicting "facts" by the two sides.<br /><br />
Use a NMMA rated TC-W3 oil, either petrol based or synthetic. That is all that is needed for your Force.
Whatever oil you use, you should decarb annually according to your owners manual.<br /><br /> Decarb Process
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: 1990 Force 150HP and synthetic oil

Probably not, Mac.<br /><br />See the article on oil type in the FAQ section.<br /><br />Moving to General Outboard.
 

LubeDude

Admiral
Joined
Oct 8, 2003
Messages
6,945
Re: 1990 Force 150HP and synthetic oil

Absolutly not. Go ahead and go with the full synthetic, say Pennzoil, its TC-W3 certified, You will notice the difference. I would reccomend a complete decarb first, Then run it a few minutes on the lake to clean it out good, change plugs and make the switch to synthetic.<br /><br />I know that there are maybe a couple people here on the forum that say they tried synthetic and didnt like it, but for every one that didnt, there are dozens that love it and will never go back, Just those odds would prove the effectiveness of the oil to me if I wasnt completly sold allready!<br /><br />People say I only want to sell oil, well, did I ask you to buy my product? No, I want you to use a full synthetic in your outboard because you are going to get better all around performance out of it. Try it, youll like it, and then come back and tell everyone about it. If you didnt like it, come back and say why, Im a big boy, I can take it.
 
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