On ships in the US Navy there is a position in the engineering dept called "Oil King" and this is the person that is responsible for testing the oil in ships engines.

On one of the ships I was stationed on a friend was the "Oil King", and I use to take a sample of my oil from my vehicles in an let him check them out. One of the many things I learned from him was that if you use a Class IV synthetic oil, you will probably never own the car long enough to ware the engine out. Unless you developed a problem that caused early ware, such as using poor quality airfilters, design, or mfg flaws.

He caught a problem on my '75 Olds '98 that saved me $$$$$, when on one sample from the Olds the silicon jumped big time. I had installed a K&N filter and it did a very poor job of filtering for normal streetf use, my friend reminded me that those race cars that run those filters get frequent rebuilds. I was hoping the car would get better fuel eccomony with the new filter, not to mention saving by not having to buy new filters all the time.

I have never used a K&N filter since then and in the 30 years I've been using synthetic oil, I've never worn out an engine or had an oil leaker. That includes one gasser that is pushing 200,000 mile at this moment and an '81 Datsun truck that went passed 200,000 miles.

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'10 Chrysler T&C Stow-N-Go White. Grandpa's ride.

'13 Chrysler 200 Touring Candy Red. Grandma's ride.

Age and cunning will always over come youth and vigor.