QUOTE(cempedaklife @ Apr 4 2022, 02:38 PM)
alexeii'm asking from exora perspective, which also have OCH issues so i presume its the same with preve.
i have known this OCH issues for a long time, and i have known the usage of oil cooler, but i never put 2 and 2 together and connect them until now.
but in the past, when i hear and see oil cooler, they always talked about oil cooler filter. doesn't proton's come with filter? shouldn't we just replace the filter?
we got exora owners club, can ask there also for benefit of members
oil filter is directly when oil pumped out from oil sump.
u see here the oil filter example:
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It has this thing called 'by-pass valve', is function to open when oil pressure is too high so oil can still go pass it.
Why? sometimes oil filter also full of sh*t liao, becomes clogged, so it needs the by-pass valve. Then? what happens?
The dirty oil will go in and out of oil filter to the rest of the engine lo...
then, reach oil cooler, stuck there... but oil cooler dont have by-pass valve, and the pressure keep building up
from here on, got few scenario depending on what oil flow after the oil cooler
if the oil cooler liao, goes back to oil sump, means the oil pressure will always high at OCH, but won't affect other parts, oil will run hotter since cannot pass through OC normally and slowly cause OCH to burst
if after the oil cooler, oil goes to other engine parts like the turbo, means turbo always not enough oil pressure, then, turbo kong
got ppl kena turbo kong, take apart liao see the turbo housing is sludge and the turbo shaft jam
this is either poor oil quality, low oil pressure kena oil cooking inside turbo housing, or, maybe bad additive not suitable for turbo
last time FB CFE club, got many contributors, mod OCH, service turbo, take apart, put back, change turbo hose from metal to braided one, do kempen servis turbo beramai-ramai... but, no one mention oil cooler or check oil filter see what is causing all those oil block