Diesel?
Seasoned HDF Member
Joined: Jan 2008
Posts: 13,681
Likes: 11,473
From: State of Confusion
well mr. mj that is the sole purpose is it not
1. lube
2. cool
3.CLEAN
the diesel oil has a higher detergent package and will hold particulate in suspension.
back in the 60's, i got an amoco company car, they got rid of them at end of warranty so at 50k i got one. they maintained the cars by local amoco stations and was religiously done but using amoco oil for auto and was pretty much sludge up, could see flakes of it through the valve cover port. after a diet of EMD locomotive oil for 20k it looked like a new engine.
there is one more point hear is that i also added a frantz by-pass filter.
if oil did not change color, then it probably isn't working.
1. lube
2. cool
3.CLEAN
the diesel oil has a higher detergent package and will hold particulate in suspension.
back in the 60's, i got an amoco company car, they got rid of them at end of warranty so at 50k i got one. they maintained the cars by local amoco stations and was religiously done but using amoco oil for auto and was pretty much sludge up, could see flakes of it through the valve cover port. after a diet of EMD locomotive oil for 20k it looked like a new engine.
there is one more point hear is that i also added a frantz by-pass filter.
if oil did not change color, then it probably isn't working.
HD states specific recommendations and requirements and doesn't recommend / suggest extended service life on oil or filters to clean better
Stellar HDF Member
Joined: Mar 2008
Posts: 2,328
Likes: 2,205
I've read Shell Rotella T6 diesel engine oil is popular with Harley riders. The viscosity is ok 15W-40, but I prefer higher for my air-cooled engine.
Diesel oil just contains a bunch of extra additive you don't need in a gasoline engine......primarily detergent/dispersant additive to hold the soot blowby in diesels.
Diesel oil just contains a bunch of extra additive you don't need in a gasoline engine......primarily detergent/dispersant additive to hold the soot blowby in diesels.
Prevous generations were SL rated but that ended.
As a result I stopped using Rotella entirely in my household and switched to Valvoline Premium Blue.
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