Oil Priming Before Initial Startup

My ZRX shifts more smoothly with a 50 than with a 40.

Another oft-ignored question is, how much protection is really needed? Nobody is going to put 300,000 miles on a KZ.

I am pretty sure that the cheapest motorcycle oil of today is better in every way, except price, than the best oil on the shelf when our KZs were new.

Nessism wrote:

I've not used Delo, but I have used Valvoline Fleet diesel, Mystik diesel, and of course Rotella, both T1 and T6.  All seemed to work well enough.

Thanks!    🙂
 

Go to one of his posts, then open the Actions menu and click Reply, just like you make a regular reply. Just above the text box, you will have two buttons. One is Message, the other is Private Message. Click Private Message and type your message to him. Click Submit when you are finished. Only Ed will be able to see the actual message, the rest of us will see the Private Content message.

daveo wrote:

I can't figure out how or if private messaging works...

Like to talk/communicate directly with Nessism/Ed

Thanks

 

email me at nessism  AT  SBC_global DOT net
(remove spaces and underline)

Been using T4 15W40, and am currently considering Shell Rotella T6 15W40 full synthetic next oil change.
Good choice?

🙂
 

daveo wrote:

Been using T4 15W40, and am currently considering Shell Rotella T6 15W40 full synthetic next oil change.
Good choice?

🙂


 

I've been researching for a good diesel oil with the most ZDDP.  Unfortunately, I can find some oil analysis reports, then the next, for the same oil, contradicts it.  

Then, I came across this article...  www.blackstone-labs.com/wp-content/uploa...18/09/Aug-17-ENG.pdf

Remember the commercial, "motor oil is motor oil".  Well, that Blackstone article seems to support that.

Bottom line: unless money is a prime driver in your life, just get some Mobil M1 4T 10W-40.  ZDDP is about 1200ppm, which is fine.  Figure on about $10/quart.  Not too bad.  About 40% more than Rotella, but we only need 4 quarts.  

My second choice is Mobil Delvac Extreme.  It's got a good stout additive package from what I read on Bob is the Oil Guy.

 
 


Is the highlighted spec relevant?

🧐

When it comes to most diesel oils, I don't think MA/MA2 is relevant.  MA/MA2 is about avoiding wet clutch damage, but that's very unlikely with diesel oils, so I don't worry about it.

Note on the bottle where it says it meets API SN?  SN is for gasoline engines, and it mandates a lower ZDDP level than full diesel oils.  

I think you would be better off with a diesel oil that is not SN certified.  Look for CK-4, and not SN.

 

 

CK-4 is noted on the T6 15W40 spec sheet:


This confusion needs to get flushed

My understanding is that the JASO MA and MA 2 are Japanese standards specifically for wet clutch motorcycle engines.

www.oilspecifications.org/jaso.php

Correct, MA/MA2 is a JASO spec, that references wet clutch performance.

Rotella is not actually "certified" to MA/MA2, they claim some flavors they make "meets the specs of...", though.

Other manufacturers of diesel oil don't even bother to make the claim, because motorcycles are a small market, and they can't be bothered.

One other thing about Rotella, they either change the formulations often, or they update the verbiage on their bottles often.  For example, some bottles of T6 claim MA/MA2, and others don't.  Some claim SN compatibility, and others don't.  It's hard to know what's going on with their stuff.