If I understand correctly, I think you're saying you already bought the valve cover gasket & plan on replacing that, but you're also wondering if you need to replace the head gasket as well...
Unless you're blowing smoke out of your tailpipe, I'd say leave the head gasket alone. But I guess it can't hurt, as long as the work is done right. What makes you think you need to replace the head gasket? Just the mileage or something else?
And I typically use 5w-30 oil...
Woohoo! 3000th post!
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