HD not reccomending Syn3 in all three holes?
Cruiser
Joined: Feb 2009
Posts: 143
Likes: 0
I read a professional oil test report with all the major brands I think Syn scored a 4 or 5 out of 10 and failed miserably on the gear test. So it's not perception it 's just not good oil and maybe ok as an engine oil but I wouldn't put it in a primary or tranny. The other thing is that mobil, redline and I think royal purple were all at the top. So here's what I'm thinkin. If your going to spend good money on oil why use syn 3 at all.
Last edited by cowboy-bc; Dec 20, 2010 at 01:37 PM.
Road Master
Joined: May 2008
Posts: 803
Likes: 3
From: Collegeville, PA
I just trader up to a 2011 CVO RoadGlide last month and it also had the sticker on it stating that it had Syn3 in all 3. So the MOCO is still recommending it. It's coming out of the tranny at the 1000 mile service. In fact, after the 100 mile service I'll do the fluid changes myself and it will be back to Mobil1 in the engine and RedLine int he primary and tranny.
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Road Master
Joined: Jul 2010
Posts: 1,241
Likes: 0
Just great, the answer is that my bike will run forever with Syn3 in all three holes OR it will explode into pieces if I use it at all! Two dealers near me, one says use the HD 360 in engine because it's too hot here for the Syn3 and it leaks thru gaskets. Other dealer says they will only put in HD fluids and they say Syn3 in all three holes is best.
WTF? How long has this been going on? These engines have been out a while and a rider can't get a straight answer.
WTF? How long has this been going on? These engines have been out a while and a rider can't get a straight answer.