Quote:
Originally Posted by tubman
When I quit racing, I found that I had a case of Mobil-1 15/50 left over (I think that it was full synthetic). Over the next few years, I used it in my stock '51 with no problems. I had heard that it would leak more, but I never saw any difference.
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i remember when i dont recall when amsoil 20w50 showed up read about it in their ads then picked up independent studies i decieded to try it in my 2000 sportster,'03 fatboy,'05 elec glide,'08 dyna,'12 triglide,'16 sporty 48,with those modern seals not too much problem just a very minor seep around the rocker box covers. only a couple of those bikes involved. probably would have happened with conventional. the harley dealer said dont do it then harley a few yrs later pu their name syn 3 for all three holes. Tom.