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10-30-2019, 09:44 AM | #1 |
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Oil for model a+ t
I heard some people are using rotella oil in their cars. What is the advantage and what weight are they using.
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10-30-2019, 10:30 AM | #2 |
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Re: Oil for model a+ t
I use Rotella for my more modern cars, truck, and cycles.
But after watching this video on FordBarn about an engine overhaul and Schwalm's recommending Valvoline 20w-50 racing oil with zinc I believe that's what I will use in the Model A from now on. https://www.youtube.com/watch?v=2EpN3lda_L8&t=1s |
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10-30-2019, 11:33 AM | #3 |
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Re: Oil for model a+ t
Oh, boy...
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10-30-2019, 11:42 AM | #4 |
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Re: Oil for model a+ t
Ford designed the Model A's engine for SAE 30 for cold weather and SAE 40 for warm weather. SAE 50 does flow as easily as the lesser viscosity oils.
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10-30-2019, 11:47 AM | #5 |
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Re: Oil for model a+ t
Shell Rotella straight 30
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10-30-2019, 12:03 PM | #6 |
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Re: Oil for model a+ t
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10-30-2019, 02:10 PM | #7 | |
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Re: Oil for model a+ t
Quote:
Opinions may vary. |
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10-30-2019, 02:55 PM | #8 |
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Re: Oil for model a+ t
Hmmm, I thought it was the other way around... Model A has steel cams...
Last edited by Y-Blockhead; 10-30-2019 at 05:39 PM. |
10-30-2019, 02:59 PM | #9 |
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Re: Oil for model a+ t
Model A has a steel camshaft!
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"If I asked people what they wanted they would have said faster horses." -Henry Ford "Primitive technology is not a design flaw" 1928 Ford Model A Roadster Pickup 1930 Gordon Smith Air Compressor 1941 Willy's Pickup 1960 Thunderbird-For Sale 1964 Buick Riviera 2x4 425 1965 Pontiac GTO, 455 Super Duty 2004 Dodge Ram SRT-10, V-10 Viper 1977 Charger Jet Boat,460 Ford,Jacuzzi Jet Front Engine Nostalgia Dragster,Supercharged 296 "Fullrace Flathead" Ford Engine Build up on DVD ask |
10-30-2019, 04:09 PM | #10 |
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Re: Oil for model a+ t
And therefore Zinc (ZSSC) is required but did the oils of the 1920s have zinc added?.
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10-30-2019, 05:17 PM | #11 |
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Re: Oil for model a+ t
Shoot, must have got it backwards.
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10-30-2019, 05:26 PM | #12 | |
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Re: Oil for model a+ t
Quote:
You probably already know, Zinc has been mostly removed because it was found zinc damages catalytic convertors. Am not sure thought I read that Zinc was also hard on some sensors. Only diesel oil has much Zinc in it since diesels do not have catalytic convertors. There maybe other reasons for diesels having zinc oil, but can not remember why. |
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10-30-2019, 05:34 PM | #13 | |
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Re: Oil for model a+ t
Quote:
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10-30-2019, 08:23 PM | #14 |
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Re: Oil for model a+ t
Agree completely. Any oil you can buy today is 1000 times better than oils of the 1920's - 1930's. ZDDP was first used as an oil additive in the mid - 1950's because of higher valve spring pressures causing premature failure of cast iron camshafts and cast iron lifters. It was never used in the Model A era and never needed due to low valve spring pressure and low RPM.
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10-30-2019, 10:54 PM | #15 |
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Re: Oil for model a+ t
I only use oil distilled from the finest dinosaur dung. For now that means Shell's Rotella 15w40. I don't use synthetic as it lacks the vitamins and minerals that my Model A deserves.
Last edited by DannL; 10-31-2019 at 11:49 AM. |
10-30-2019, 11:11 PM | #16 |
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Re: Oil for model a+ t
Full synthetic, or 100 percent synthetic oils, are extracted from crude oil or a byproduct of crude oil.
Throw a few more worms into the can!
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10-31-2019, 10:09 AM | #17 |
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Re: Oil for model a+ t
Every time oil comes up, I have to revise what I think I know about oil. To stir this pot even more I looked up this subject on Wikipedia.
https://en.wikipedia.org/wiki/Synthetic_oil What I found interesting is the statement - "Oil needs to be changed because it gets contaminated with combustion by-products that accumulate at about the same rate regardless of oil type". This seems support that in order run longer oil change intervals, an oil filter is needed, whether running non synthetic or synthetic. To extend life of Rod and Main bearings keeping the oil fresh/clean is the goal, choices are frequent oil changes and/or an oil filter. I have seen many statements on forums observations that one of the benefits of synthetic oil is it runs cleaner resulting in extended oil change intervals. Am not sure what to believe. Also found interesting the statements - ""Full synthetic" is a marketing term and is not a measurable quality." & "The base material, however, is still overwhelmingly crude oil that is distilled and then modified physically and chemically". My previous understanding was that Full Synthetic was oil not based on Dino oil but was purely synthetic, and "Synthetic" oil was a blend of Dino and synthetic properties referred to in this article as "Semi-synthetic". Am still trying to get my brain around this info, so if my conclusions are incorrect please correct me. |
10-31-2019, 10:40 AM | #18 |
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Re: Oil for model a+ t
I have read studies showing the lubricity of oil improves after it has been used in the engine for a period of time. Also I've heard a lot of engines have bearing "rap" on first start up after an oil change, particularly if the filter is not filled prior to start.
Therefore, I try to find a balance between regular but not too frequent oil changes. Of course the above is based on modern auto engines, and may not apply to Model A engines fried okra |
10-31-2019, 10:48 AM | #19 |
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Re: Oil for model a+ t
Is lubricity the same as sliptivity?
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10-31-2019, 11:57 AM | #20 |
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Re: Oil for model a+ t
I'm considering trying Olive Oil. There's so many labels to choose from. Anyhoo . . . I digress.
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