Originally Posted By: alarmguy
Originally Posted By: bubbatime
Originally Posted By: Goodkat
Am I missing anything in a comparison with VPB vs Delvac 1300 or T4?
Only one oil has JASO MA on the back of the bottle. Why experiment? It makes no sense. You have a wet clutch, why not just stick with the very readily available and easy to find and affordable Rotella? What do you gain by trying Delvac or premium blue?
Yes, it pays to experiment.
Any 15/40 HDEO will work in a bike just fine in any bike but some bikes will shift better with one brand over the other, there is no reason to just stick to Rotella and accept it as the only one.
Unknown to most Rotella is NOT JASO listed/rated/approved oil.
Rotella just takes the extra step to make a statement that their oil meets Jaso standards.
Other companies do not make that statement, dont know if there is a reason other then they are not after the MC market or dont want to bother testing or whatever. Its not like I do not believe Shell/Rotella in that statement but just making sure everyone knows it is not a Jaso Approved Oil it is an oil that the maker says meets their standards.
A safe choice for sure but I personally did not use it in my metrics, I found other HDEOs gave me longer lasting good shifting but not by a huge margin and if someone wants to be "safe" then Rotella is just fine. Im talking the 15/40 oils and firmly believe if you ride only in temps above 45/50 degrees or so in a shared sump bike any HDEO 15/40 oil is superior to a 10/40 in a shared sump bike.
Being I dont have a shared sump bike anymore, I dont follow and have not looked into if the new CK4s area all safe like the Cj4 s ...
If you live in the hot climate I even more firmly believe that you are better off with Valvoline 4 stroke conventional motorcycle oil in the 20w50 weight.
Cost almost the same as an HDEO at roughly less then $5.00 a quart in Walmart (or walmart online), add a dollar if its in a auto parts store.
In hot weather the Valvoline 20/50 will blow away any 15/40 in shift quality, good stuff.
Great stuff, great shifting in my Yamaha 1300, ran a number of UOAs on it back in 2011/12 right here in this forum.
I'm glad you posted this because I thought I had read that although Rotella claims it JASO MA MA2, it's not recognized by JASO. To me its like helmet companies claiming their helmets are DOT approved based off their own inhouse testing vs helmets that are SNELL approved. Seeing the DOT sticker may make a customer feel better but it may not be as substantial as its implied.
https://www.bobistheoilguy.com/forums/ub...JAS#Post4803519
I changed the oil in my wife's CTX700 with more Delvac and I tried VPB in my VSTROM 1000 yesterday. As far I can tell there is no clutch slippage and the bike didn't explode. I leave for a 7 day trip tomorrow so we'll see how it goes. So far I'm pleased with how the bikes run and shift with conventional HDEO. I don't think we'll be riding these bikes below 45 degrees but if we do I'll probably throw Valvoline 10w 40 in them. My DR650 is the bike I'll keep insured all year so I can ride it on the nice winter days we get every now and then. It fill get a lighter weight oil at point and I'll block the oil cooler.