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Title: what is a 92 Series certified automotive engine?
Post by: Low Class on August 10, 2012, 02:16:03 PM

I read this in the DD service manual. It pertains to a thermatic valve located in the top of the oil filter adapter that modulates oil flow to the oil cooler. The cooler doesn't see full flow 'till 230F. Says certified automotive engines had this feature to 1988 when it was deleted.

Does this mean all on-highway engines or was it a California only thing?

Title: Re: what is a 92 Series certified automotive engine?
Post by: luvrbus on August 10, 2012, 08:51:53 PM

You will see very few engines with the thermatic valve I haven't seen one in years they have all been replaced it only lasted for a short time like the 100,000 mile oil change lol

Title: Re: what is a 92 Series certified automotive engine?
Post by: Low Class on August 11, 2012, 05:23:40 AM

Thank you sir. Sometimes the book is confusing.

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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: Low Class on August 10, 2012, 02:16:03 PM