Syn versus Dino - MPGs
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Logistics Pro
Joined: Nov 2002
Posts: 4,788
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From: Mansfield, TX USA
Originally Posted by quaddriver
funny things cummins says. Their 'NTC-400' lubricant test is a TTD (test to destruction) of a base reference motor and it always blows up, only thing is, at these extremes it blows up much later when running syn oil....and to add insult to injury, they sell the results to the offending oil producers to use for the literature.
Cargo Master
Joined: Jan 2004
Posts: 2,512
Likes: 8
From: Cook Forest and Irwin PA
Originally Posted by jschira
Please remember, that the Cummins article is about fuel economy.
Post Fiend
Joined: Jan 2003
Posts: 8,600
Likes: 4
From: Iowa
So it sounds like they break the engine in that test by denying it adequate cooling? Sounds like conditions we'll never see on the street. If you blow a radiator hose, STOP DRIVING! If you dont, you deserve what you get.
I'm still looking for the data.
I'm still looking for the data.
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Logistics Pro
Joined: Nov 2002
Posts: 4,788
Likes: 20
From: Mansfield, TX USA
Originally Posted by quaddriver
why yes it is. And it conceded that the synthetics have lower pumping losses at low temps. So now look at any data sheet for any two oils (one syn, one non syn) and compare same for 100*C. You can now extrapolate the efficiency at high temps with respect to low temps. Plus the article neglects to mention that at extreme temps, oils thickens as it turns to caramel. which usually occurs right before that NTC400 sends a rod into the gulf of mexico.
Now, you are trying to take data regarding fuel economy and through some sort of hocus pocus, extrapolate data about engine longevity. Sorry, it doesn't work like that.
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