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piper1 · 07-06-2008, 03:48 PM

I can't vouch for the 5w30 but in my Duramax (in a pickup) I have seen a near consistent 2% improvement with Mobil Delvac 1 (5w40 diesel oil). Thought I'd test it out and I admit I'm surprised at the fuel saving. Now if I can get the drain interval out far enough that it and the fuel saving will pay for the $7 a quart cost........

Right on with the Megauriers products. They really do have better stuff as they are a company filled with and owned by collector car nuts!

07-06-2008, 03:48 PM	#4 (permalink)
piper1 Senior Member Join Date: Sep 2007 Location: Kitchener, ON, Canada. Rating: Posts: 349	Re: Cargo Van Tips I can't vouch for the 5w30 but in my Duramax (in a pickup) I have seen a near consistent 2% improvement with Mobil Delvac 1 (5w40 diesel oil). Thought I'd test it out and I admit I'm surprised at the fuel saving. Now if I can get the drain interval out far enough that it and the fuel saving will pay for the $7 a quart cost........ Right on with the Megauriers products. They really do have better stuff as they are a company filled with and owned by collector car nuts! __________________ The piper1 avatar Hall of Fame Help the North American Economy, Quit buying CRAP from China! North American products get moved on North American trucks! I know all the words to "Convoy" and wish I didn't.