Question about 2006 Harley Davidson FLHR Road king
2005 harley deuce primary case
Posted by Anonymous on
Hi Anonymous, Mobil 1 is is designed for water cooled engines and contains additives designed for your automobile motor. HD SYN 3 has additives designed for your clutch plates and a motorcyle which has an air cooled engine. If you were getting a blood transfusion would you want it from an immediate family member or some stranger? Good luck.
Posted on May 19, 2015
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Posted on Jan 02, 2017
SOURCE: primary case
3/4 of a quart or bottle of primary chaincase fluid or change to 20/50 synthetic and dont worry about changing it for about 6000 miles the oil can be put in by removeing either cover hope this helps
Posted on Jan 01, 2009
Using synthetic is all "pros" in my opinion. I've done a lot of research on line and talking to motorcycle mechanics, local riders, local landscapers who all use synthetics. There is a ton of scientific data and wear comparison data out their- so much that, for me, it's a no brainer to use synthetic. After hours of research I decided to use nothing but Amsoil. Make sure you specify the Motor Cycle oil as it is specifically formulated for bikes. You can usually find it locally. Harley has theirs made for them by one of the major oil refineries- they just put their name on it and mark it up tremendously. Amsoil's specs are the best I've found. I have a 2007 Dyna Super Glide with Vance Hines pipes and a 96 Harley Low Rider with a Crane cam, tricked out chrome and 2 piece 3 spoke "saber" wheels- a real beauty!
Hope this helps and good ridin'!
Posted on Mar 13, 2009
if you put 32 oz of primary oil in the primary case then you have enough oil in there already. Never put more then 1 full quart or you will have leak issues. The way I do it is to have the bike upright and level and look through the primary inspection cover and as long as the chain is in the oil a little bit then your fine.
Posted on May 20, 2010
If you're running Harley oil, you're running either semi-synthetic or full synthetic. You bike came with H-D Syn3 20W50 fully synthetic oil in the transmission. They use the Syn3 in the engine, transmission, and primary now. You can use whatever you like. Amsoil, Royal Purple, and Mobil make oils that are suitable for this use but you'll have to check their website to determine which one they recommend.
Posted on Jun 29, 2010
Not a problem, I've done it on my '94 model Wide Glide. Your bike probably came from the factory with synthetic oil in it. Harley developed their Syn3 20W50 oil and the bikes are shipped with the stuff in all three compartments, the engine, the primary, and the transmission. Just check the manufactures website to make sure whatever oil you decide to use meets Harley's specs.
Posted on Jul 16, 2010
Testimonial: "Thanks, but what about the oil in the cases?"
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