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I change all 3 holes when I service my bike, period!! I do it because I have a huge investment, I enjoy it and the cost is minimal. I also use a scavenger to remove all the old oil from the engine. I also clean the air filter when I am servicing the bike. My tire pressure gets checked weekly and I like to keep my bike clean. I think it is pride of ownership of a great piece of machinery.
When manufactures market something, they realize that most people want maintenance costs kept to a minimum. To do this, in my opinion, they push the boundaries of some maintenance points. Air filters, tire inspections, forks, bearings, and oil are among them.
When I change my oils, I drain each component into it's own clean pan immediately after a long ride. Then I let the oil sit in that pan over night so all the sediments settle to the bottom. After your poured the oil out of those pans that them out in the sunlight or use a flashlight and looks for shiny stuff in the oil. Maintenance like that is what makes a difference to help prevent from being broke down in the middle of no where. Not everything gets caught by the drain plug magnet or oil filter.
Ok, you guys kind of beat me up on this, but there were some good points for thought. So now a question on what you recommend for the weight of gear lube to use. I have ran Formula Plus for 27000 miles but am considering switching over to Mobile 1 synthetic gear lube. What weight do you recommend: 75W-90 or 75W-140? Summer temps up here will run up to 100F, but I usually don't ride much over 95F. Thanks.
... But one thing I haven't read a lot about is Rushmore transmissoon failures. So what am I missing? Why are some of you guys changing tranny oil every 5 or 10K? Not trying to argue, just really thinking some of you are pissing away some money - why not just send me a case of beer? You'll feel better, with less work. Me too.
My '14 Limited's 3rd gear junked on me at 80k, yet I still do all three holes every 5k unless I am on a road trip that exceeds that in a single run. Couple of years ago I rode 6500 miles in two weeks, but didn't change fluids until I got home.
As far as my transmission goes, it was a bent fork. I highly suspect something other than fluid change interval to have caused the failure.
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