well it's been a little over three weeks since i installed a new oil cooler and air / oil seperator. i also installed a mr. gasket fuel filter inline between the oil fill neck and throttle body. my objective was to eliminate blowby ( which my car had a problem with after it sat for more than a day or two ) and to keep my oil temp down of course. i have checked my oil several times since installing the oil cooler to make sure I didn't need to any more oil, since it takes a little time to 'burp' all the air of the cooler lines, passages, etc. a week after the install i noticed the oil still looked very clean. i thought, hmm not bad. the second week i checked the oil a few times and it still looked very clean. i checked it again today and it still looks clean. i have driven the car an average of 80 miles a day back and forth six days a week, plus twenty or so bumming around on my day off. so in the past three weeks i have racked up 1500 miles easily. normally by this point the oil would be much, much darker. and get this - when i installed the new oil cooler i changed from a fl1a filter to a fl300 for clearance reasons. so the oil looks 100% cleaner even with a shorter filter. i attribute most of this to the oil cooler and the increased oil capacity. i also have had zero blowby, even under hard acceleration. repeated hard acceleration even 
so if you're one of those people like me who thought the whole air / oil seperator pcv thing was a good idea but wasn't sure if it is worth the investment - it is. so far it has worked like a charm for me. and an oil cooler is cheap insurance. i love it when a half a$$ mechanic like myself actually installs something that works great.
so if you're one of those people like me who thought the whole air / oil seperator pcv thing was a good idea but wasn't sure if it is worth the investment - it is. so far it has worked like a charm for me. and an oil cooler is cheap insurance. i love it when a half a$$ mechanic like myself actually installs something that works great.
