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Join Date: Apr 2010
Location: Belvidere, IL
I've been using synthetic Rotella 5W-40. I ride even into 20 degree temps and I love the cold flow characteristics of this oil. It still has the range of viscosity to handle heat well.
Start ups in the cold mornings are no problem, and the clutch noise almost entirely dissappeared.
On dissassembly, the engine looked super clean inside.
On the downside, it costs twice as much, about $20.00 per gallon, and I do not favor a longer oil change interval. The lubrication is still great, but I suspect contaminants from combustion will cause wear if oil is not changed frequently.
The lower viscosity gets the oil distributed quicly on initial startup, an so, should reduce wear from that.
Thats my 2 cents! Bout what it's worth.
2005 VN 750
.040 pilot jets.
Splines lubed 1955 mi.
Reset pickup coil gaps.
Shindengen MOSFET RR
V & H Cruzers