Quote:
Originally Posted by Pnut
I first heard about the LN spin-on adapter on this forum. The reasoning, as you stated, seems sound... it's a cheap safety precaution as far as I'm concerned, so I got one. I'm more curious to know about the bypass function (or lack thereof) on spin-on filters and if not having that functionality on a 986 could be considered risky practice?
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The use of oil bypass systems are a hold over from when the only oils you could buy were conventional straight weight oils, which could demonstrate high viscosity/poor flow characteristics under cold conditions. To make the engine's easier to spin over and prevent oil starvation or filter damage on cold start, OEM's used bypass valves in the oil systems. With modern multi weight full synthetic oils and pressure regulation built into oil pumps, these situations simply do not occur, making the bypass system unnecessary.