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Old 03-07-2011, 07:58 AM
macop1104 macop1104 is offline
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I have a 2010 with a 4.7 and the owners manual is very specific on using 5w-20 oil. I do 4-5 hour trips towing an enclosed trailer and I was curious if maybe 5-30 would be a better choice? After an 8 hr round trip of towing my "change oil" warning came on with about 1500 miles on the oil that was in it. Anyone know what triggers this warning? Is it just mileage or is it doing diagnostics on the oil?
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