Compression Ignition Addict
Join Date: Apr 2007
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I vote 15W-40, unless you live somewhere where it gets brutally cold. Use a good quality, diesel-rated, oil like Amsoil or Rotella. I just bought Rotella for $8.88 a gallon @ Wally's World. Can't beat that.
2001 F250 Ext Cab LB 4x4
7.3L PSD, 4R100
Stock except for DIY Tymar intake and 4" exhaust
226K miles and counting!
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