Quote:

Quote:

Shell Rotella T- Synthetic 5W-40



ride 400 miles on a hot day and see what happens to that crap. I think its junk



Rotella is all I have used, and I have more 400+ mile days than I'll ever remember, and yeah, it can be a little warm down here. I ride in 5 o'clock traffic, in 90+ degree heat, and my oil samples always make me smile. 36k, and time for another oil change. I'm sticking with the original 4k service interval Triumph recommended in my owner's manual, but I know I could do 6k if I wanted to without a hitch.

I also feel strongly that ANY good oil, changed at proper intervals, would serve these bikes well and not result in premature wear or failure. Synthetic or not. If you changed it at 3-4k intervals and had samples tested, I would bet that all would be okay.

I'll stick with the Rotella-T Synthetic for my bike though. I have 156k on my '96 Chevy truck and have been using straight 30w Valvoline for the last 100k or more. Before that I used Mobile One, when it was still a new truck, until my oil distributor convinced me it was not cost effective when 200-300k could be realized without problems on conventional oil changed at proper intervals. What would you expect to gain for paying 3-4x the cost? (I'm not racing it, or running high rpms...) So I went back to conventional oil in the truck and it still runs like new.

Proper oil change intervals are not always gauged by the miles on the odometer. That needs to be factored in with the amount of time between the oil changes, and the type of service the motor is subjected to. A lot of long highway trips is much better than a lot of short trips where the engine is constantly warming up then cooling down. Those heat cycles are what breaks down the oil because of the condensation and results in water in the oil, changing the oil properties.



Keith
Houston
Ridin'Texas
'04 Speedmaster
AI removed, Pingle, UNI Filter, 1 shim, straight-through slash-cut TORs, Stage 1 DynaJet, 140 mains, 3 turns, 16/42 final drive, 115K
2020 T120 Black