Diesel Place banner

1 - 9 of 9 Posts

·
Registered
Joined
·
91 Posts
Discussion Starter #1
Had the oil changed by one of those jiffy lube places, they used castrol 5w40 syntec, saying it was approved for all engines ( I specifically asked if it was ok in a duramax and was told it was the one they recommend). Now I'm hearing it isn't certified for the duramax. Should I get this crap out of my engine?
 

·
Registered
Joined
·
12,262 Posts
Drain ................


Syntec ....
<LI>SAE 5W-40: is engineered specifically to meet the Volkswagen engine warranty requirements, exceeding VW 502 00 and 505 00. Exceeds all car and light truck manufacturer's warranty requirements for the protection of gasoline, diesel and turbocharged engines where API SL, SJ, SH, CF or CD is recommended. Porsche approved and also exceeds European ACEA: A3, B3, B4, MB 229.3, MB 229.1, BMW LL-98. Meets the engine protection requirements of Corvette GM 4718M, Volvo, BMW, Mercedes Benz and ILSAC GF-3 for API Certified Gasoline Engine Oils. </LI>








This oil Castrol Meets spec => http://www.castrolusa.com/products/default.asp?prod_mp=1





Mac
 

·
Registered
Joined
·
91 Posts
Discussion Starter #4
thanx,


out it comes, after I go and tear someone a new one.
 

·
Registered
Joined
·
1,240 Posts
Print this out and show them.


Diesel Engine Oil Quality





This doughnut-shaped logo symbol is used on most oil containers to help you select the correct oil. It means that the oil has been certified by the American Petroleum Institute.


You should look for this on the oil container, and use only those oils that display the logo.


Oils designated as API CH-4 or CG-4 are best. The CH-4 or CG-4 designations may appear either alone, together or in combination with other API designations, such as API CH-4/SJ, CG-4/SH or CH-4/CG-4/SJ.


These letters show American Petroleum Institute (API) levels of quality.



<H4>Important</H4>


Oils that do not have one of these designations (CH-4 or CG-4) can cause engine damage which is not covered by the warranty.





Diesel Engine Oil Viscosity





The recommended oil viscosity is SAE 15W-40.



<H4>Notice</H4>


Using oils of any viscosity other than those recommended could result in engine damage. When choosing an oil, consider the range of temperatures the vehicle will be operated in before the next oil change. Then, select the recommended oil viscosity.






<H4>Important</H4>


However, you can use SAE 10W-30 if temperatures stay above -18°C (0°F) before your next oil change. When it is very cold, below -18°C (0°F), you should use SAE 5W-30 to improve cold starting and prevent engine damage.


These numbers on the oil container show its viscosity, or thickness. Do not use other viscosity oils such as SAE 10W-40 or SAE 20W-50
 

·
Registered
Joined
·
941 Posts
Wow. So 5w-40 is not recommended by GM anymore for cold temps?? Interesting, I wonder why the change???
 

·
Registered
Joined
·
11,646 Posts
you have to keep in mind that GM made the oil viscosity recomendations on dino oil.. I dont think there is a synthetic oil with a 15W-40 rating. Synthetics have a wider range is all.
 

·
Registered
Joined
·
91 Posts
Discussion Starter #9
OKay heres an update, went back to xxlube and told the manager I wasn't happy. Brought the e-mail I recieved from castrol to show them that syntec wasn't approved for the max. The guy told me their lube rep recommended it for ALL diesels. After phoning castrol (# from e-mail) they replaced oil.
 
1 - 9 of 9 Posts
Top