I was checking the service history on the car I purchased - 2006 Mazda 3 2.3L 95,000 miles and of course the guy took it to an oil change place and seems like they did a engine flush. This was about 1-2 years ago and so far it doesn't seem like the engine leaks or any known problems. Just seems like such a money grab when these lube places do them on such a low KM engine. I know for some vehicles its fine to do an engine flush if you have sludge problems but I dont believe thats the case for my engine. Wondering if theres anything I should do from now on to ensure that the flush doesn't end up causing issues in the near future? Was thinking of just leaving it alone and running HM oil when I can cuz that shouldn't hurt. Currently got Mobil HM in it right now for the first oil change!!