i use Mobile1 5000 guarnteed fully synthetic.? i got 154,000 right on my car. is that the best motor oil to use? or is there better?

ps. my car doesnt leak any oil or anything like that! if that helps:D

i use mobile 1 high mileage. i drive a 96 HX with 218,406 miles.

i use castrol high milage in all my cars. yeah its conventional oil, but theres really no point in spending the extra money. besides i've never had a problem.

I use Castrol High Mileage 10W-30 for my 1998. I've been using it forever and have not had any problems.