Who makes or blends this product? SYN3 is a proprietary blend, exclusively custom-blended for Harley-Davidson.
Harley-Davidson | Products | Motor Accessories
According to the "Material Safety Data Sheet" for H-D's SYN3 it is chemically a blend of 60% synthetic and 40% petroleum oils
Syn-3: It's manufactured by Citgo Petroleum.
Composition is as follows:
Component CAS # Concentration
(1) 1-Decene Homopolymer, hydrogenated 68037-01-4 50% - 70%
(2) Proprietary Ingredients Proprietary Mixture 1% - 10%
(3) Polyisobutylene 9003-27-4 1% - 10%
(4) Distillates, Petroleum, Hydrotreated Heavy Paraffinic 64742-54-7 0% - 20%
(5) Distillates, Petroleum, Solvent-Refined Heavy Paraffinic 64741-88-4 0% - 20%
(6) Zinc Alkyldithiophosphate 68649-42-3 0% - 2%
Here's a snip from another source..
Finally got a Material Safety Data Sheet (MSDS) on the SYN-3 after two months of trying. It is in fact manufactured by Citgo Petroleum. Composition section reads like this:
Component
CAS #
Concentration
(1) 1-Decene Homopolymer, hydrogenated
68037-01-4
50% - 70%
(2) Proprietary Ingredients
Proprietary Mixture
1% - 10%
(3) Polyisobutylene
9003-27-4
1% - 10%
(4) Distillates, Petroleum, Hydrotreated Heavy Paraffinic
64742-54-7
0% - 20%
(5) Distillates, Petroleum, Solvent-Refined Heavy Paraffinic
64741-88-4
0% - 20%
(6) Zinc Alkyldithiophosphate
68649-42-3
0% - 2%
Item 1 is a Group IV base oil. I was unable to locate the manufacturer of this base oil. Group IV and V base oils are the only "true" synthetics to the cognoscenti.
Item 2 is probably their additive package (boron, calcium, magnesium, phosphorous, moly), but it is conceivable there could also be some "secret" synthetic oil, maybe an ester type oil, included in it.
Item 3 is a fancy name for synthetic rubber (or elastomer) but this is probably considered to be "synthetic" oil as well.
However, Item 4 is a Group II base oil, namely Conoco Pure Performance Base Oil, either 110N, 225N or 600N. To my knowledge, no one is calling a Group II oil a synthetic.
Research yielded no information on the group number of Item 5 but it is Conoco's Cit-Con 650N Base Oil. Can't help but presume that it is a Group I oil as it is solvent refined. While they have their place, most quality blenders are not using Group I oils in thier premium motor oils and they certainly are not considered synthetics. However, I stand to be corrected.
(Also got a MSDS for the HD 360 20w50 oil. The major base oil constituients in it are the same ones as are listed in Items 4 & 5 above.)
In any case, here is what Harley-Davidson says about this stuff in their advertising:
quote:
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Developed with a proprietary blend of three synthetic basestocks, ...
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If there are significant amounts of Group I and II oils in the SYN3, could the MoCo have streached the definition of "synthetic" a bit further than Castrol did when changing Syntec from a PAO Group IV base to a hydrocracked Group III base? Wonder if ExxonMobil will go after them and we will get a new definition for "synthetic?"
Show me something different