The AUSubaru.com.au Forums

hi guys
i bought a heap of makeup for wrxtc"s car today giving it a makover while shes in hong kong.(not that it needs much).even bought a cover lol(am i going mad in my old age) its no a show car but im proud its mine oops hers and it does turn heads
anyways bought some oil and a filter to .dame small filter .was talking to the guy at supa cheap he reconds someone said they put/change from say a z9 to a smaller oil filters on his car to build up oil pressure. mith or truth as i was going to run a remote filter and cooler in the brumby
just curious on other opinions .

dibs

i,d say myth but who knows?.....i use them blue micro filters...about $15 but boy oh boy do they keep things clean

by the way..if i go to hong kong my car will be out the front ready for a polish too...

yea rite and when you going to hong kong may i ask lol. nice try m8

dibs

i shoulda asked what sort a motor

dibs

Oil goes from the pickup, through the pump and then the filter before making its way around the engine. If the filter was building up pressure, its only gonna between the pump and the filter,... which will reduce the pressure going to the rest of the motor.

Your Super Cheap friend is on drugs

Myth for sure.

pretty much if the Oil pump is good you wont have a problem using the reccomended filter.

Of course on some smaller engines you wont want the filter to be 'that' big as it will take longer to build up the Operating pressure and over time will show wear on internal parts from each time you start it up cold.

even some 'decent' size engines have relatively small filters.

a Z79A is what is used on the 3.5 V6 DOHC in my parents pajero, and that would be similair if not smaller to what we all use in our EJ's (Z495)