What is tire mounting?

My engine is pretty muddied up. I’ve never used a cleaner before because I didn’t think I had to, but my car is now taking longer to start and using more fuel than ever. I’ve been looking into engine cleaners and have come across a question: how is the Techron Fuel Injector Cleaner different from the Fuel System Cleaner?

I recently bought an old car that hasn’t been driven in years. The previous owner told me that the car's engine oil fluid levels are fine, but my mechanic is recommending doing an engine oil flush to make sure the car runs smoothly. I don’t understand why I’d do this though. Can you tell me what an engine oil flush is?

We’re placing bets around the office about who has the least marks on their license. One of my co-workers claims they have a full clean license. What would be considered a clean driving record?