Oil for Duramax

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07-28-2009, 11:31 AM

#11

26sxl

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kendall 15w40 super-D3 is now syn. for great price.....

07-28-2009, 02:27 PM

#12

TCG

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Rotella Synthetic 5/40 "blue" bottle
I pay approx $23.00 per gallon at Advanced auto and Murray's

07-31-2009, 11:23 PM

#13

dmaxx3500

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try ''walmart'' house brand 15-40w,i saw on a diesel xm show it has better additives then mobil delvac,ive used it 2 last oil changes and it seem fine

08-01-2009, 11:32 AM

#14

JPD Motorsports

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rotella t 15/40... and beat on the diesel with over 600hp for 86k miles no troubles.

08-01-2009, 02:26 PM

#15

MikeyFIN

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Whale oil suits best for US engines

08-03-2009, 02:08 PM

#16

Strip Poker 388

Rob

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If you change your oil every 5000+ or Higher miles,what about fuel dilution to the oil,combustion blowby contamination in the oil?

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