Hi my name is Billy and I have a ? about my titan. I bought it Dec. last year and every things awesome but, here recently my temp. gauge is going up to the H when I first start to drive it. It did not do this till here recently. I took it to the dealer and they said that it was normal. I even let them change my oil just to make sure everything was done right. I use Mobile 1 5w30. So I'm reaching out to people I know will tell me whats really normal.