OneBad1.5

hey guys, ive been using part synthetic castrol oil (5W 30) for about 4 oil changes and I just switched over to fully synthetic mobil 1 (5W 30) about a month ago. it seems like every couple of weeks i have to put more oil in. is it normal that synthetic burns up quicker or is it just somethin f'ed up in my car?? no puddles on the ground either. any advice is appreciated, thanks!!

King Dingaling

its possible that because the synthetic is a much finer fluid you may be getting more blow-by. then again i guess ti could depend on mileage and all. if the motor is old synthetic might not be the best idea for it. due to the fact that it finds every possible way to leak that it can

j4k3

How many miles are on the motor? What motor is in the car, and how hard are you driving it?

Hi Skuuu

Cars that are 88 and older cannot use synthetic. When I was at training for Valvoline Motor Oil co. they said that the seals in the engines from 88 up can use the synthetic but the older ones cannot due to the chemicals and detergents in the oil, will cause the seals in the older engines to blow out because it will literally eat away at the seals.

Fuck, that was a run on sentence but oh well haha. What year motor/mileage ect.

OneBad1.5

2000 prelude, h22a4 and 116000 miles, maybe get on it every now and then, i dont drive it hard in an effort to save gas and save the motor.

CivicDuty

your rings are fried bro, time for a rebuild, lets see a H build up

OneBad1.5

id cry... not really.. but for real, i might tear up

Fabrik8

It's not uncommon to burn a bit of Mobil1 from what I've heard. There are tons of WRX people who have said the exact same thing. Most of them switched brands and the problem stopped. The speculation seems to be that Mobil1 is one of the lower viscosity synthetics, so it's retention is a little different.