Just switched over to full synthetic oil on my '11 ZX14. Two questions:
1) Any issues with Yamalube 15w-50? Why Yamalube you ask? I get it serviced at a Yamaha/Kawi dealership. The mechanic who races (an R1) highly recommended it.
2) If I ever choose to switch brands, yet stay full synthetic, is that going to be an issue?

Thanks in advance.

Probably not.

Nah should be great... might cost a couple hp but probably nothing to be concerned over.

So you asked if its OK after you switched to syn from dino oil?? AS long as you went with the 20W-50 astroglide I read on the internet it was ok

The only issue with the Yamaha oil is the price. I checked on-line and it appears to be a $14/qt product. That's a bit pricey. As for performance, it should work just fine.

RockyMountain motorsports recently had Bel-Ray EXS 15w-50 ester synthetic on clearance for $29.99/4-liter container. This product would be a direct competitor to the Yamalube that you're using for half the price. For the past two years I've used 10w-40 as recommended in my owners manual but it gets HOT here in Atlanta during the summer so I'm going to give the higher viscosity Bel-Ray a try.

* Last updated by: Fowvay on 2/25/2015 @ 2:22 AM *

Just replaced oil and filter. I used Castrol Power RS Racing 4T 10W-50 full synthetic with OEM filter. Hope Castrol does a good job. I love to see clean oil from the oil checking window.

I have been running Maxima, 50/50 synthetic and more recently Fully Synthetic ester, cant say there are any issues.