Choosing the correct Oil for a wet-clutch Motorcycle

NZ models came with them and temps here average 68 - 77˚F in Summer

Yeah we got the different wheels with twin discs as well, at the time our National limit was 50mph

 

You paid attention to that?!!!

 

That sounds wonderfully pleasant, and cool.

 

Don't be silly, we took it as more of a minimum, rarely below 60-70 mph, even 20mph over the limit the fine was only $50

Even the winter average is 53 - 61˚F

 

Ick. That's way too hot for winter.

 

As long as there's minimal humidity in the summer time, I'd take that weather hands down

 

^ yea, after so many decades living in a cold climate, the novelty of below freezing temperatures starts to wear off.

Although haveing defined season changes is a requirement to appreciating nature.
One of my brothers moved to L.A. - he had a difficult time adjusting to a climate that pretty much stays the same 365 days a year.

 

In Canada, we have 2 seasons; winter, and construction.

 

^^^Same as Wisconsin

 

I think fun-time is over. Let's keep this thread on track.

 

I've been very happy with the operation of my bike using Castrol 20W-50 4T oil. It goes for $6.99 a quart at Autozone. My kevlar clutch with slightly heavier springs is fairly new. The difference between the old and new set up makes for much more enjoyable rides with its smooth operation.

 

https://www.castrol.com/en_us/unite...ke-engine-oil/4t-4-stroke-motorcycle-oil.html

 

Old thread, I know. But...

1. Are all the parts necessary to rebuild clutches available here from Chacal?
2. What kind of cost are we talking about for all the necessary parts?

Thanks.

 

Most definitely. Have to contact him for a quote

 

This place is the best! Thanks.

 

read this
CLUTCHES 101-Part 1: the 400/550/600s with pics

 

Great stuff!! Thanks.

 

So are you saying that Rotella T-6 5w-40 full synthetic is a big no-no for our XJ750 bikes? And that Rotella T-4 Triple 15w-40, which is cheaper, is actually better?

And somewhat related...is it possible that using T-6 5w-40 could cause a slight oil leak?

 

P

Price has no bearing on the suitability of an oil to the intended application. Specs are specs and standards are standards.
Rotella has been a go-to oil for motorcycles for over 30 years, in large part because of the ZDDP content.
Any oil that meets JASO specs is perfectly fine to use, whether synthetic or not.
I use the Rotella T-4 because it's commonly available, meets the required specification, and is cost effective for me.

 

That's fine. My questions were simple: Is T-6's full synthetic/5w-40 composition bad for the old XJ750's, or not, and could it possibly contribute to a slight oil leak if full synthetic oil was never used in the bike previously? If so, I'll swap it out immediately for T-4 Triple Protection. My reason for choosing T-6 is that my buddy swears by it for his older Honda Magna V4s. But those bikes are water cooled, not air cooled. It never dawned on me that T-6 could be bad for XJ750s.