NaOH
Diamond Member
My car has a major service every 30/60/90k miles. I just prefer to take it to the dealer and let them do the work. A couple hundred bucks isn't going to break me every 2 years and as far as I'm concerned it is money well spent as I have all that service history come time to sell it.
I do it for this very reason too. I have all my original receipts for each service done as well.