98 Lumina 3.1L V6 164k miles It is running well except difficult warm start. My driveway was getting black spots, and when I checked engine oil, it was short by 1 pint after 2000 miles. Last week I bought a tire at PepBoys, I asked them to see if they could repair it. They said to get the engine cleaned first (at some other place) and bring it back for dye test. I don't know a place where engine can get cleaned. But I have heard before steam cleaning causing new problems? 1) Is it true that steam cleaning is bad for sensors (and what not)? 2) Who steam cleans cars? 3) How accurate is the dye test? 4) The car has been leaking oil slowly at oil pan gasket for years, but I didn't have to add oil before engine oil change. Whatever the diagnosis may be, the engine would have to come out. What else would you do with the 164K engine while it is out? 5) One nagging thought: is it worth the trouble? Thanks.

Wife has a 2003 Alero 3.4 engine,we want to do a little traveling this summer .Have a boler light weight trailer we are gonna pull behind car Do I need to have a transmission cooler installed trailer weighs 1200 lbs