Originally Posted By: mrsilv04
OK... You're cheap.
So, you're NOT really all that worried about those temperature extremes, are you?
I don't really see how temperature extremes alter the equation
That is, the properties of the oil are what are going to be called to task in that situation. Now sure, a full oil filter MAY mean a quieter start ..but I don't think that it's much different than a warmer noisy start. If the flow is delayed due to pump relief activity, the thing will be spinning its tires even more with more of a static oil column to push.
Again, I like quiet starts.
Although it's had added purposes attached to it in the evolution of engine design, the ADBV's primary purpose isn't to keep the filter full indefinitely. It's to prevent rapid backflushing of the media. The spec on an ADBV is to hold for xxx amount to time. If it had any mandate to keep the oil filter full ...under OEM specifications, then there would be a very long list of prohibited filters out there. Virtually no filter manufacturer could offer a nitrile ADBV over the OEM spec'd OCI and Fram would surely be setup for endless denial of warranty claims just by doing the job that it does in its functional state.
My belief, in where someone like Ford spec's a "S" filter ..is that it is done to reduce customer complaints where engines, when starting with an empty filter, produce too much noise. I don't think that it produces any wear of merit (that would effect the engine over its life cycle). I don't "KNOW" this ..it's just my opinion.