Time for a 7.3L oil change....

Diesel D

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Wisconsinite here.....winters are cold, and summers can get hot......what all-season diesel engine oil do y'all recommend?
 

greenskeeper

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Rotella 5w-40, I do 5k intervals, big fan of archoil additive (especially if you have high miles on your injectors 200k+)
 
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compressionignitionrules

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rotella T6 synthetic in the winter. I run rotella T4 in summer no issues yet. I put a lot less on it in the winter and the synthetic increases the cranking speed cold. I hate block heaters......

my previous E350 powerstroke club I used JD 0w40 in winter and rotella T4 in summer and had 8 yrs of problem free fun with it. original injectors on it too. WIX/Baldwin/Motorcraft filters used but Napa premium used now for convenience. I do 10,000 km oil change intervals both vehicles.
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Diesel D

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Thanks everyone......Rotella T6 5w-40 it is....whew!!....that stuff's pricey.......oh well.....I'll just drink the cheap beer for a while....:cheers:......
 

greenskeeper

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Thanks everyone......Rotella T6 5w-40 it is....whew!!....that stuff's pricey.......oh well.....I'll just drink the cheap beer for a while....:cheers:......

Look for a sale and buy cheap and stock it deep !
 

79jasper

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Basically throwing money out the window, unless you're running extended changes with a bypass setup.

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