Originally Posted By: Jakegday
why is that though? why shouldnt "racing" filters be used in daily drivers? they not filter as good for as long?
Probably various reasons, including no ADBV.
Probably the main thing to remember is that a racing filter's #1 priority is to flow oil, not filter oil.
Go to the website and check the specifications for the number you are using and the number that you should be using. There will be differences.