Hey guys, I haven't been driving this truck a lot since I got the Jeep. I went to drive it and unloaded it seems to be running warmer than it used to. The fan never used to come on unloaded. It also seems like it might not be running as smooth as it used to, but that might just be me getting used to the Jeep.... Any input? Hasn't sat a lot but has only been driven maybe once a week. Should I try ATF in the filter first?