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Message: <blockquote data-quote="Rkb53" data-source="post: 1038562" data-attributes="member: 74955">Hello there everyone.My first post as a new member so please bear with me. I just bought a 2008 V8 limited with only 63 yes that's right 63,000 miles in beautiful shape. My first question of the day is, what oil to use. The book, and oil cap both say to use ONLY 5w-20 which I am sure the perfect oil for this engine. However, I want to use something a little heaver. The oil I prefer to use weight wise is 10w-30. Is there any reason I can't use this? OK fuel mileage may suffer a tiny bit but other than that ,is it going to cause any problems down the road? I don't want to end up with stuck rings or anything like that, I just like that 10w-30 oil is thicker and in Connecticut plus the little towing I do 10w- 30 has always worked best for me. I'm sorry this is such a long post for a question that has been asked a 1,000 times I'm sure but thank you for reading it. RKB</blockquote>