Most go this route because the cost of a new transmission…Be thankful he’s wiling to cover anything since a used car is sold as-is

100% fine. Future once a year, if not used much, and regular use, most full synthetic is 5k to 10k nowadays

Interstate batteries. Excellent CCA ratings

Worth the $125 diagnostic fee , before start throwing parts at it …Sounds fuel related but that’s a shot in the dark guess

To be honest and the correct answer is yes let a little out, too much oil can cause it to froth up and start destroying internal engine parts , however imo that much over is not going to cause this but if was one of my daily reliable vehicles yes I would lower it and check after and top off if needed

AS-IS CONDITION

#FULLSEND

Pb blaster soaked every 10 mins for awhile, long ass breaker bar or impact …if bust one then take that route of new but I think they will break

Probably around $800 ish

Interstate batteries my choice High cold cranking amps 36 month return policy. Every single battery has lasted no less than 5 years most right at 6