How Hot is Too Hot?
Outstanding HDF Member
Joined: Aug 2009
Posts: 2,858
Likes: 217
From: Puyallup Wa.
right before I put Wards fans on my 10 street glide. I was stuck on i5 because of an accident it was stop and go for better than 5 miles with go being only like 15 miles an hour I disabled heat management just to see how hot it could get. Power vision ET Read 358f bike ran fine. After I put fans on in any conditions it would never get over 260f.
Road Master
Joined: Oct 2013
Posts: 1,168
Likes: 114
From: Drummondville, Qc, Canada
There must be a rule of thumb to calculate this for bikes. I know that for cars the rule of thumb is:
A good quality oil is built to last 6,200 - 7,400 miles at a temperature of 176 F. For every step of 50 F you have to cut maintenance in half, that's why OEM recommands to change oil at every 3,000 - 3,5000 miles because car engines runs around 226 F.
I beleive that peoples who lives in warmer regions like the south part of USA must cut their oil changes interval compare to peoples who live in northern regions like Canada.
I think that the best way to see how long your engine oil will last is to do regular oil analysis.
Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
Likes: 132
From: SoCal
Most conventional oils do too, like Valvoline V-Twin 446F or Valvoline VR1 478F , no need to spend 12+ dollars for great oils.
Cruiser
Joined: Jun 2010
Posts: 226
Likes: 3
From: Middle Georgia
YOU will melt before the Harley will! Here is a video about their desert testing facility.
2013 Harley-Davidson 'Tested in Arizona, Ready for the world' promotional video - YouTube
2013 Harley-Davidson 'Tested in Arizona, Ready for the world' promotional video - YouTube
Road Master
Joined: Oct 2013
Posts: 1,168
Likes: 114
From: Drummondville, Qc, Canada
Most engine oils have a boiling point at around 590F, the big difference between a regular and high-end oil is the quality of the base oil and its additives. So yes, it's worthed to spend the extra dollars.
Last edited by Zeus55; May 5, 2014 at 11:17 AM.
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