Thread: oil & oil pump
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Old 06-30-2019, 10:15 AM   #5
Joe K
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Default Re: oil & oil pump

Quote:
Originally Posted by rer_239 View Post
yes i'm talking about the valve chamber on side and I do have oil still in it after draining the oil pan.
thanks
Dick
This is normal. Many enthusiasts will open the chamber and use a suction bulb to get that "last little bit" on the oil change.

Many also drop the oil pan to get to the "oil tray" which by itself holds upwards of a quart of oil.

As you change oil from a normal mark on the dip-stick, you'll get about 4 quarts of oil. But one quart will remain in the engine, to our modern minds "contaminating" the clean oil you're about to put in.

Lubrication in the Model A era was more along the lines of "there is a source of oil." Not a "we have clean pressurized source of filtered oil."

Hence the tendency of many to seek out a non-detergent oil for the old system - the precursor to detergent oil which was developed for today's more modern systems where you want the wear particulate to stay in suspension - precisely so it can be filtered.

The original Model A, on the other hand, used "settling" to remove a lot of the wear particulate to the oil pan during non- use. The "sludge" which many now decry and attempt to remedy had a purpose, or at least an "after purpose."

Much debate in the Model A community about non-detergent versus detergent oil. One thing for sure, don't run non-detergent for long periods, and then suddenly switch to detergent lest the detergent oil pick up and liquefy 5000 miles of wear particles all at once.

Joe K
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