fully synthetic oil : Kawasaki ZX Forums: Kawasaki Ninja Forum

verdeboyo35 · 10-10-2009, 03:32 AM

hello to all zx owners
Just finished a home service, just a basic oil and filter change for now. Before now it was on Motul 5100 semi synthetic. But this time I decided change to Silkolene Comp4 fully synthetic 10w 40. What a difference it makes. Instead of a gear change clunk, it's now a gear change click - and very smooth click too!

Kawasaki UK said it would be fine, but there might be be clutch slip. There is no clutch slip at all. I would definitely recommend it.

But make sure you drain all semi synth out and change oil filter, cos the two oil don't go well together.

LocoCabron · 10-26-2009, 01:20 AM

As i understand a semi synthetic oil has part synthetic and part carbon made oil so it will be ok if u left some semi synthetic oil in your engine they mix and blend perfectly, well just as they do it in the cans when you buy it. No point on being worried on some semi synthetic oil left in there. But yes its important to change always the oil filter when you change your oil anyway.