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well thats why i was asking. ive heard of people changing weights from summer to winter.
Yes, you can change weights, that won't hurt anything. Look in the back your manual, it should have a chart based on outside temps. I meant add 1040 to your truck as a top off when it has 520 in it.
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1978 F250 Lariat 4x2
2008 Expedition Eddie Bauer 4x2
I agree. Sell the oil and use 5w20 Motocraft semi-synth. There are oil specs -in your manual-that the engine requires and I don't think that meets them.
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1978 F250 Lariat 4x2
2008 Expedition Eddie Bauer 4x2
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