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Discussion Topic:
Engine Oil Capacity
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MG |
12-27-2012 @ 11:23 AM
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Senior
Posts: 1254
Joined: Nov 2009
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I bypassed "Ford's excess oil automatic release system" by reverting to Supereal's 4 qt's. fix......
This message was edited by MG on 12-27-12 @ 11:24 AM
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LarryK |
12-27-2012 @ 7:11 AM
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New Member
Posts: 105
Joined: Aug 2012
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Thanks to all. I should have recognized that the Canadian measurement would have been in Imperial quarts. I first ran into this when I was in the Navy and we bought fuel oil from the British in Hong Kong. It was confusing then and still is.
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TomO |
12-26-2012 @ 7:26 AM
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Senior
Posts: 7250
Joined: Oct 2009
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Alan, your memory is better than mine. I don't remember your backwards calculation. I should have pointed out that the gasket on the dipstick is about 1/8" thick, so if your dipstick doesn't have one, you should adjust your reading accordingly. Have a Happy and Healthy New Year.
Tom
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ford38v8 |
12-25-2012 @ 9:24 AM
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Senior
Posts: 2758
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Mike, ya got me. And Tom, I seem to remember now, dejavu on the same conversation some time back, you pointed out my backwards calculation then also!
Alan
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TomO |
12-25-2012 @ 8:17 AM
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I agree with Mike on this one. 5 US quarts will fill the pan to about 1/2 quart over the full mark on most dip sticks. In 49 they changed the design and capacity of the oil pan to 4 quarts without a filter. The dipstick still showed 1/2 quart over fill with the 4 quarts. All Ford literature prior to 1949 specifies 5 quarts. Alan read Johnh6813 reply. He give the correct relationship of Imperial to US quarts. Your explanation is backwards.
Tom
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supereal |
12-25-2012 @ 7:32 AM
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Posts: 6819
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If the oil level stays the same over time, it is likely that condensation and fuel is making up the difference. Lightly or seldom driven vehicles create this due to short trip use. Primitive crankcase ventilation adds to the problem. Overifilling swamps the primitive crankshaft seals, such as the slinger, coating the clutch assembly and your garage floor. If carried to the extreme, oil that reaches the crankshaft is whipped into a foam which causes the oil pump to lose prime, starving the bearings. The correct dipstick shows a range of sufficient oil level, rather than an absolute amount.
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kubes40 |
12-25-2012 @ 6:12 AM
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Senior
Posts: 3395
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Good morning Alan, I am only relating what the engineering drawings specify. At least in 1939 & 1940, the drawings specify five US quarts to fill. I realize this is often an argumentative point. Merry Christmas to you!
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1934 Ford |
12-25-2012 @ 5:40 AM
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An old guy, who was probably younger than I am now, once told me that the main job of oil was cooling. And, that a little extra wouldn't hurt. With my 21 stud engines, if 4 quarts meets the mark I made on the dip stick, I figure I didn't drain it long enough. Most times I add a little extra to get it exactly to my mark. That's the gauge to tell me not only if I've lost or burned some, but how clean the remaining oil is. I never need to add between changes that occur not based on miles, but color. My Fords are like my VW's, they all mark their spot. (Which makes me wonder why I never need to add oil. Apparently an occasional drip makes a small mess with very little oil loss)
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ford38v8 |
12-24-2012 @ 9:14 PM
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Senior
Posts: 2758
Joined: Oct 2009
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Mike, you are dead wrong on this one.
Alan
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kubes40 |
12-24-2012 @ 7:27 PM
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Posts: 3395
Joined: Oct 2009
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You will with little question get a lot of responses that will tell you four (US) quarts. I can tell you with certainty that the engineering drawings of the oil pan are quite specific... FIVE US QUARTS. Dip sticks were often swapped and very often the gasket at the top of the stick is long gone. Both of those malady's will effect the p[roper "reading". An additional quart was NOT required for the optional filter, at least not through 1948.
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