On 06/01/2012 09:46 AM, YTC#1 wrote:
> On 06/ 1/12 03:13 PM, Mark Olson wrote:
>> Not that Magnetec being sold as a car oil would stop me from
>> considering it (assuming it doesn't have friction modifiers in the
>> thicker grades). Shell Rotella 15W-40 (conventional) didn't used to
>> meet JASO-MA, because it failed one particular test (ash residue,
>> IIRC) by a very small amount. Of course it was never intended to be
>> _marketed_ as a motorcycle oil, but it was/is a very high quality
>> oil perfect for M/C use. Shell adjusted their formula slightly and
>> had it retested to JASO spec, and now it is so marked.
>
> It depends on where you think you may be when your decision will bite
> back :-)
For some years, I have been using diesel truck fleet oils such as
Shell Rotella 15W-40, Chevron Delo 400 15W-40, Mobil Delvac 1300
15W-40, etc. in my bikes with good results. Since Rotella achieved
JASO-MA certification, and it still is quite inexpensive, it is now my
default choice. However, due to the high revving nature of my wife's
EX250, and the fact that it doesn't get many miles put on it, I have
decided to use Mobil 1 4T Racing 10W-40 in it, at about 4x the cost
per liter of Rotella 15W-40.
But the EX250 only takes 1.9l per change so it's not a lot of money
no matter what oil I use.