Originally Posted by rob-2

What oil testing have you done to confirm the 5k oci?

Originally Posted by andrewhake

I haven't send any samples of the Castrol in myself but luckily many other AP2 owners have and posted up their results. 5k OCI seems to be on the low end of the range with most results showing it could go closer to 7500. Obviously it would be best to send in my own samples since my driving patterns are probably different, but that's why I stick to the shorter range that has shown good results.

Originally Posted by ebchu

I haven't send any samples of the Castrol in myself but luckily many other AP2 owners have and posted up their results. 5k OCI seems to be on the low end of the range with most results showing it could go closer to 7500. Obviously it would be best to send in my own samples since my driving patterns are probably different, but that's why I stick to the shorter range that has shown good results.

Originally Posted by MMisencik157

Your car burned 7.3 quarts of oil in a 9,500 mile interval?!

Originally Posted by Thateguhate

Probably a stupid question in general but I'm going to ask anyways because I'm usually pretty excessive with changing my oil especially before a trackday.. However after picking up some Amsoil and given the 25k guarantee I'm wondering how many miles most of you actually put on your cars with hard driving thrown into the mix.

Obviously I wouldn't think of pushing it to that kind of mileage, Especially since so far I typically burn maybe a quart every 1500-2000 miles. I just wouldn't want to waste the money that I spent on this stuff by doubting what I read on the back of a bottle and on forums.

Originally Posted by MMisencik157

I haven't send any samples of the Castrol in myself but luckily many other AP2 owners have and posted up their results. 5k OCI seems to be on the low end of the range with most results showing it could go closer to 7500. Obviously it would be best to send in my own samples since my driving patterns are probably different, but that's why I stick to the shorter range that has shown good results.

Originally Posted by andrewhake

I haven't send any samples of the Castrol in myself but luckily many other AP2 owners have and posted up their results. 5k OCI seems to be on the low end of the range with most results showing it could go closer to 7500. Obviously it would be best to send in my own samples since my driving patterns are probably different, but that's why I stick to the shorter range that has shown good results.

Originally Posted by whiteflash

My last Oil change I used amsoil. Not doing that money sink again. I used the original ~5.5 qt's and another 1.5 qt's over ~6.5k miles. I'd only add about .5qt's of pennzoil in the same time frame with even more hard driving. I actually babied the S during my amsoil time (just commuting mileage).

I'ma just stick with Pennzoil Platinum/Hyper for the rest of the time I have the car. It's given me better life with way harder driving.

And no I wasn't about to spend another $25 on that oil change to get an analysis.