Ex850R;c-138278 wroteSlowbrick;c-138263 wrotejamesinc;c-138260 wroteVee_Que;c-138249 wrotejamesinc;c-137990 wrote@ALVO360 once you have it all cleaned up, you can keep all that carbon build-up away by changing the oil more often. I do oil every multiple of 5000km and filter every multiple of 10000km and I've had engines that are still spotless inside after several years of use.
Oil filter is more important than the oil itself. It's a false economy to not do both. This is via information from someone high up in teaching at gmh.
Can I get an actual citation on that outrageous claim?
+1. Its been proven multiple times that changing a filter too often actually negates the effectiveness of the filter. A filter gains efficiency the older it gets and then drops off after it reaches peak efficiency.
A filter getting better with age doesnt make any sense either....
a guide , not detailed but its got the important stuff.
http://knowhow.napaonline.com/need-oil-filter-change/
That article refers to what happens if you leave it for too long. What I am talking about is that changing a filter too often is false economy. A filter is designed to trap particulate media by using its own solid media (paper, fibre etc). This solid media has a certain level of efficiency when it is clean. As the filter gets used and more and more particulate gets trapped then the size of the media that can pass through it gets smaller and smaller until eventually it gets clogged and no longer works and the solid media either breaks down or the oil pressure rises in the engine due to the restriction or the bypass valve opens and dirty oil is circulated. This scenario would only really happen in a WELL PAST DUE filter or a filter that is fitted to an engine that is sucking in lots of dirt, is running rich or a diesel that is ashing into the oil.
There is a certain point that the filter will reach in its lifetime where its efficiency increases over its efficiency it had when it was new. This period is usually not too far from the end of the recommended service life (6 months, 10k - 20k) at which point the filter gets changed and the cycle starts again.
So yes changing a filter each and every oil change will ensure the engine is getting the as advertised filtration on the box, but there is no economy/performance/longevity to be gained by doing so. If the engine is running properly and is not dirtying the oil in excessive amounts then its fine to change every other time.
This is of course my observations + reading ive done because I too was in the "change every time" camp but it really isnt necessary and is just pedantic.
