Re: Ken McWilliams(synthetic Oil)

Posted by Ken McWilliams on October 21, 2000 at 17:52:27 from (205.188.192.22):

In Reply to: Ken McWilliams(synthetic Oil) posted by Scott Green on October 21, 2000 at 03:49:34:

Scott,

I've not used synthetic oil at all except for STP. I didn't want to start a debate and overshadow the question that I wanted answered.

I think there are a lot of opinions for and against the use of synthetic oil. There are people that say they got 300K miles out of an engine with synthetic oil, but there are people that have done likewise with Valvoline, Quaker, Pennzoil, Castrol, Kendall, etc.

I'm of the opinion that frequent oil changes to keep an engine clean and the oil film when adequately pumped through open passages to the bearings will keep an engine running for several 100K miles. (I've always changed my oil at 5K intervals. When replacing valve cover gaskets these engines have always been very clean with 100K miles.)

The worst problem for any engine is at startup when the oil has drained out of the engine. This is where most wear is generated. When starting an engine the best thing to do is keep it as slow as possible until oil pressure builds up. I've heard people start and race a cold engine and I cringe to hear it. Fortunately, I have a long driveway and the engine runs at idle allowing the engine and transmission to get oil circulated.

I've seen the demonstrations at shows of the slick 50 engine running without an oil pan and the engine drained. I'm of the opinion - so what! Check and change the oil, treat the engine right and it will last. The film of oil circulating through the rod and crank under pressure are actually floating the crank and rods on the journals. Similar to the air hockey games the kids play.

So why pay for the exotic oil when the standard stuff will suffice when done right.

I have a 98 Ford F250 that uses the oil filter with the rubber check valve built into it. It should have been done years ago to prevent oil from draining back into the oil pan over night. The 5.4L engines were experiencing cold start knock and it was from the oil draining back into the pan. It took this problem for Ford to come up with a fix. All manufacturers should be using a check valve to prevent oil from draining.

Well Scott, this is my long answer to your question.

Ken McWilliams
Dayton, OH

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