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| Joined: | 03-14-2005 |
| Location: | Atlanta, Georgia USA |
| Posts: | 406 |
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You've got the right idea and your experience hints at the difficulty in getting all of the engine internals clean. Draining the cooler removes the oil but not the sludge and varnish left behind from 30+ years of driving/sitting.
If you focus only on the oil cooler, you are missing about 1.5 qts of oil that always gets trapped in the pan along with the cam housings. For this reason every factory manual from every car company will talk about pulling the oil pan and cleaning it after a certain number of miles.
The inside of any engine is not unlike a dish-washer. Repeatadly pumping fresh, hot, clean oil mixed with a few additives has the same effect as tearing the engine down and cleaning it by hand with paint thinner.
Tearing down and learning about the engine has its own rewards, so I can't argue if someone wants to enjoy that experience. Personally, I'm at the point where I'd rather pump a few cases of oil through the system rather than 'enjoy the opportunity' to clean another one.
Judson