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Tractor Talk Discussion Forum

API Oil Service Ratings

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Guy

02-03-2004 18:18:04




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Was reading the service manual for my skid steer engine and it specifies 5W30 API Service SF, SG type oil. I think no problem and drive to the store in town. All the 5W30 they had was API Service SL, SJ. Can anyone help me learn more about these service ratings.




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Jay

02-04-2004 06:43:29




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 Re: API Oil Service Ratings in reply to Guy, 02-03-2004 18:18:04  
The gasoline ratings SJ SL are backwards compatible. This (so far) has always been true on the gasoline ratings. It is usually true on diesel ratings, but not always. "S" stands for Service and "C" stands for Commercial.



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Jay

02-04-2004 06:45:02




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 Re: Re: API Oil Service Ratings in reply to Jay, 02-04-2004 06:43:29  
Oops - from that link click on "The Motor Oil Guide Shelf Card".



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Tom

02-03-2004 19:28:58




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 Re: API Oil Service Ratings in reply to Guy, 02-03-2004 18:18:04  
The SJ and SL are just the Latest specs, and have replaced the SF and SG. The SF was probably current when your manual was written. Get the later specs and you will be fine.



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Gene Davis (GA.)

02-03-2004 18:47:32




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 Re: API Oil Service Ratings in reply to Guy, 02-03-2004 18:18:04  
the letter "S" signifies spark ignited type engines,usually gasoline, kerosene,lp gas or natural gas. The letter "C" refers to compression ignited engines, that is diesels. The further you go down the alphabet in letters, the better the oil additive package. Exanple;"SF" rated oil will have a much better detergent and additive package tnan an "SC" rated oil. it is actually better to look at these qualifications and forget about the brand name on the oil container.

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Slowpoke

02-06-2004 00:23:05




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 Re: Re: API Oil Service Ratings in reply to Gene Davis (GA.), 02-03-2004 18:47:32  
I saw some off brand oil in the dollar store labeled SA. People actually buy it! Does it have any aditives at all?



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