Using Mobil 1 in the X.Put 10w-30 in the first time I changed the oil and put 0w-30 in today when I changed it again. Used either Quaker State 4x4 or Valvolene synth blends 10w-30 in my 91 Hardbody with no problems.
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Volant, Gibson, That Dam Mod

"Eating and sleeping are the only activities that should interrupt a man's enjoyment of his cigar" Mark Twain.