synthetic castrol 15-50

[slider]

anyone eve use this??Im going on trip thru oklahoma-kansas-into colorado then  back  and am changing oil today before I leave...any input welcome

[F6Dave]

Haven't used it.  However, with the triple digit temps they've been seeing in that part of the country, the higher viscosity may be a good thing.

[csj]

I use 15-50 semi-synthetic. My mechanic highly recommended it.

Only complaint I can say is, first thing in the morning, its cool
get on it hard, the clutch slips, but just 5 min. later, bike is warm
enough that clutch stops slipping. Just my experience with semi-syn.

Full syn could work better.

[Ricky-D]

If you have been using Dino up until now, I would suggest not changing to a different oil like you suggest.

It would be better to wait until you get home to experiment with the oil.

***

[John U.]

I think the clutch slippage problem is caused by friction modifiers in the oil not whether it's synthetic or a blend of synthetic and dino oil. Most car oil has friction modifiers to some degree.
Many of us have used Mobil One synthetic 15w50 and some have had clutch slipping problems. I make my own blend by adding diesel oil (which has no friction modifiers) 1 to 1 with Mobil 15w50. I haven't had slipping since I started using my version of semi-synthetic oil. You can't go wrong with a diesel oil, pretty cheap too.
As the saying goes, your bike, your choice.

[Gear Jammer]

I think the clutch slippage problem is caused by friction modifiers in the oil not whether it's synthetic or a blend of synthetic and dino oil. Most car oil has friction modifiers to some degree.
Many of us have used Mobil One synthetic 15w50 and some have had clutch slipping problems. I make my own blend by adding diesel oil (which has no friction modifiers) 1 to 1 with Mobil 15w50. I haven't had slipping since I started using my version of semi-synthetic oil. You can't go wrong with a diesel oil, pretty cheap too.
As the saying goes, your bike, your choice.

Which diesel oil?

[John U.]

I use Mobil Delvac 15w40. Chevron Delo or Shell Rotella would work as well.

[valkyriemc]

Follow link and scroll down to read abt motorcycle use.

http://en.wikipedia.org/wiki/Shell_Rotella_T

[Brad]

I have been using Mobil 1 10W40 High Mileage.  The Mobil 1 High Mileage oils have no friction modifiers.

[Red Diamond]

I think the clutch slippage problem is caused by friction modifiers in the oil not whether it's synthetic or a blend of synthetic and dino oil. Most car oil has friction modifiers to some degree.
Many of us have used Mobil One synthetic 15w50 and some have had clutch slipping problems. I make my own blend by adding diesel oil (which has no friction modifiers) 1 to 1 with Mobil 15w50. I haven't had slipping since I started using my version of semi-synthetic oil. You can't go wrong with a diesel oil, pretty cheap too.
As the saying goes, your bike, your choice.

Which diesel oil?

Bobby, he probably doesn't know you are a diesel oil expert.