oil codes -CF2 -CG4 -CH4

[poorboycjs]

Can someone explaine what the number means in the oil codeing ? Anybody ever see a 20/50 oil (non synthetic ) with a CH 4 rateing Want to use it in my Hardley. TIA

 

[Cooker]

Welcome to the TDR.



Sorry, I have never seen a 20w50 non-syn CH-4 oil.



-Ryan

 

[B9Mile]

American Petroleum Institute

Info from the API:

http://api-ep. api.org/filelibrary/ACF28.pdf

 

[redram]

Originally posted by Poorboy

Can someone explaine what the number means in the oil codeing ? Anybody ever see a 20/50 oil (non synthetic ) with a CH 4 rateing Want to use it in my Hardley. TIA

Royal Purple makes a 20W50 that meets CF-4 / SJ and is ideally suited for your Harley.



I also do not know of a 20W50 that meets a CH-4 rating. HD is using what I call Round Table Marketing or circular marketing by specifying a "diesel" rated 20W50. Unfortunately, no one makes it.



The HD oil is made by Sunoco (or at least used to be).



Good luck.

 

[TwoSlick]

Poorboy,



This works very well in air cooled cycle engines - I know of a local Ducati shop that uses it. It is not friction modified and is compatible with wet clutches as well:



http:www.amsoil.com/products/aro.html



BTW, the HD oil is only CF rated, not CH-4, the last time I checked.





TS