Re: Re: NOT CHANGING ANTIFREEZE REGULARLY

Posted by Ken McWilliams on October 22, 2000 at 15:55:07 from (152.163.197.81):

In Reply to: Re: NOT CHANGING ANTIFREEZE REGULARLY posted by Alberta Mike on October 21, 2000 at 19:19:54:

Alberta Mike,

I'll have to say that not changing oil at some reasonable frequency will accelerate the wear and damage on the engine.

When I was a youth working in a garage, I did a lot of useless repairs that were attributable to infrequent oil changes. I saw engines that were only 5-8 years old completely clogged. They would usually come in to have the noisy hydraulic lifter fixed. When the valve covers came off, it was immediately apparent what the problem was. Sometimes the only space in a valve cover was where the rocker arms moved. The valve covers, valley, and oil pans would be full of crud. The crud in the valve covers would be baked hard. The oil would drain out of it and leave a packed, hard mess. This crud circulated throughout the pasages and eventually clogged them. Leaving the engine ready for a major coronary attack.

The "Y" block Fords (272, 292, 312 and other sizes in that family) were especially bad. There was an aftermarket kit available that ran oil from the oil sending unit port to each valve cover stud to oil the rocker arms via the rocker arm shafts.

Any car will have blow-by. It's a matter of how much. That's why the motor oil will get dark in a few thousand miles and the transmission ATF will stay pretty pink for tens of thousands of miles. This contamination has to be removed by oil changes. The filter will remove particles large enough to be filtered but the rest continues to recirculate and eventually settle in the oil pan and other low oil velocity areas.

The older engines were worse than the new ones because they had crankcase breathers open to the atmosphere. This would suck in airborne particulates in additin to the stuff being generated by the combustion.

Can't agree with you on the oil change situation.

KRM

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