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post #1 of 3 (permalink) Old 09-18-2010, 12:36 PM Thread Starter
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6.9 engine oil??

Good Day Gents,

Hey i have an old 6.9 diesel non turbo of course. I was wondering what you all might think of me swapping to a 30 weight synthetic? Just trying to get easier starts out of the old girl during our cold winters up here? My main concern is that the oil might be too light for the oil pump to pick up consistently.

Also any advice on filters? I used to be able to buy these larger filters but can only get a short version now (sorry can't remember part #).

Thanks for the help guys

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post #2 of 3 (permalink) Old 09-19-2010, 12:38 AM
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i think you are on the right track with a synthetic. maybe try a 5w40 synthetic.

2004 FORD F-250 XLT 4x4 C/C S/B....

Sct-Livewire with custom tunes, guages, 4" exhaust,coolant filter....soon to be tuned by PHP....
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post #3 of 3 (permalink) Old 09-29-2010, 11:10 AM
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The synthetic 5w40 makes a difference in the winter mornings for me.

I think for your 6.9 you want a napa filter 1742.

1997 F250 HD XLT, 4x4, E40D, 4.10 limited slip 265/75 KM2s 300k mi
2002 Escape XLT, auto, tow package, Cooper disco STTs, 120k mi
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