Oil Question

[RGRAT1618]

I have been given alot of valvoline max life 10w-40 oil. how good does this oil do. please let me know. thanks all...



rob

 

[Ron Bissett]

oil ?

If it states for Diesel service should do fine if not do not use it in your eng. Lol Ron in Louisville KY

 

[David Wheeler]

RGRAT1618:



Valvoline max life 10w-40 is for gasoline engines only. If you'll perform a search on "oil", you'll find more info. than you ever really wanted The top three brands used in our trucks (based only on my observations) seem to be Chevron Delo 400, Shell Rotella T, and Amsoil (synthetic, a story within itself). Please check your owners manual for recommended oil grades. Our list (compared to gasoline engines) is a bit more limited Good luck!



God Bless America!



David



P. S. Looking at your low posting count I assume you are new to the organization... ... WELCOME

 

[cap-n-cray]

Premium Blue

I have been a Valvoline fan for years. Cummins recommends Valvoline Premium Blue 15W40 along with other oils. I buy it at the Cummins dealer along with a Fleetguard filter. Be sure to watch which filter you use.

 

[hammong]

ALWAYS make sure that the Oil you use is specifically certified for use in Diesel engines. Diesel-certified oils contain chemicals that aid in suspending the soot that your engine produces, and is one reason why the oil you drain from your truck is usually black as coal. A gasoline-engine oil will be lacking these soot control modifiers, and consequently the soot will be deposited permanantly inside your engine, where it will eventually coke up your bearings and cause premature engine failure.



Diesel-certified oils have an API classification starting with "C". The current specification is "CH-4".



Gasoline-certified oils have an API classification starting with "S". The current specification is "SJ".



LOWER letters usually mean the oil does not meet the quality or protection criteria of the newest CH-4 and SJ specifications. For example, before the CH-4 standard degree of protection was devised, the previous standard was "CG-4" oil. I believe our Cummins engines have required CG-4 grade oil for maximum longevity, but a CH-4 oil is "even better" than a CG-4 oil, and will provide superior protection.



Here's a link to Chevron's site describing what the letters and specifications mean:



http://www.chevron.com/prodserv/nafl/automotive_motor_oils_fs.htm



Greg