Service manual states Oil every 5k, Primary every 10k and tranny every 20k. Although I change the primary and tranny every other oil change, using a good synthetic in all 3

 

at the beginning of the season i do a full service regardless of the mileage from my last service, and every 5000 miles thereafter.

 

So True!!! Wonder how much bad advice I've given? LOL.

 

I run Amsoil synthetic 20W-50 in the summer, 10W-40 in the winter. Transmission gets Amsoil synthetic 75W-140 every 10,000 miles, primary gets Drag Specialties non-synthetic primary fluid every 5,000 miles. I do the transmission every 10,000 rather than 20,000 because I just can't stand to leave any fluid in place for that many miles. The primary gets changed every 5,000 due to the fact that I've already fried a clutch and a compensator.

I've posted the results of my UOA here.

If you're changing your oil every 2,500 miles, your oil's more expensive (not to mention I'd rather spend my time riding than changing the oil). The analysis is $25, and it gives me a window into my engine. If something's not wearing right (say, a bearing), it'll show in the analysis.

What's costs more------replacing a bearing? Or a crank?

 

when i got my bike new in 08 i changed oils from all three holes at 500 miles and there was quite a bit of whiskers on the magnetic plugs. then i did it at 1,000 miles and a lot less whiskers of steel on the magnetic drain plugs, then i went to my 5,000 mile intervals. with the current synthetic oils, this seems to work out just right.

 

Whatever gives you the warm n fuzzies as long as you don't exceed the recommended intervals per manufacturer specs. is all....

 

Ever notice manufactures may say change oil every 5 thousand miles and oil manufactures say every 3 thousand? It's easy to see who's going to benefit the most.

 

Want to buy it? Half price!!

 

Now that's some funny **** there, i don't care who you are....

 

dealer told me using anything other than harley oil would void the warranty. Is this true