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07-19-2022, 04:02 PM | #1 |
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Differential Fluid Change Interval
I’m looking through the Les Andrew’s book for a differential fluid change interval, but I don’t see one.
What do you suggest? Sent from my iPhone using Tapatalk |
07-19-2022, 04:18 PM | #2 |
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Re: Differential Fluid Change Interval
5,000 Miles per instruction booklet.
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07-19-2022, 04:24 PM | #3 |
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Re: Differential Fluid Change Interval
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07-19-2022, 04:33 PM | #4 |
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Re: Differential Fluid Change Interval
I currently have Snyder’s 600W in the differential.
I don’t want to hijack this thread that talks about transmission oil: https://r.tapatalk.com/shareLink/top...ink_source=app But, does modern oil extend the change interval? Sent from my iPhone using Tapatalk |
07-19-2022, 04:36 PM | #5 |
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Re: Differential Fluid Change Interval
If your differential drips occasionally, you need to check the level based on time as well as miles. We drive a lot and I find the level down a good bit in 1000 miles or say a month or two.
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07-19-2022, 06:22 PM | #6 |
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Re: Differential Fluid Change Interval
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BTW, I have a magnet on every drain plug in all of my cars.
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07-20-2022, 11:37 AM | #7 |
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Re: Differential Fluid Change Interval
I have never in 60 years ownership of my A, have I changed the diff or trans oil unless during a rebuild. I don't tour very often, but have driven it many miles in that time.
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07-20-2022, 12:53 PM | #8 | |
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Re: Differential Fluid Change Interval
Quote:
Tom Endy |
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07-20-2022, 05:09 PM | #9 |
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Re: Differential Fluid Change Interval
All of my moderns don't even have a drain plug.
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07-22-2022, 04:14 PM | #10 |
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Re: Differential Fluid Change Interval
I change the trans and diff oil when I get a new car (who knows what the history was), check it annually and top off as necessary. Much ado about what to use, but I keep a couple of quarts of the 600W that the suppliers sell and just don't think about it. I'm kind of with Tom Endy, seems to me the newer lubricants would not degrade in 5000 miles.
Oil every 500 miles as I haven't had oil filters. I've ordered a Burtz engine so I will likely rethink the filter issue when I build it. JayJay
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07-22-2022, 05:53 PM | #11 |
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Re: Differential Fluid Change Interval
Once ever 100.000 miles is good!!!!!!!!!!!!
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07-22-2022, 06:26 PM | #12 | |
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Re: Differential Fluid Change Interval
Quote:
I’ve used Blue Hylomar on the drain plugs in the past. That helped with my dripping. Sent from my iPhone using Tapatalk |
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07-22-2022, 06:27 PM | #13 | |
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Differential Fluid Change Interval
Quote:
I replaced the oil with Bratton’s 600W this time because I already had it on hand, but I may go with a more modern oil (140W or 250W) like one mentioned elsewhere on the site the next time around. Sent from my iPhone using Tapatalk Last edited by shew01; 07-22-2022 at 09:19 PM. |
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07-23-2022, 04:38 PM | #14 |
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Re: Differential Fluid Change Interval
I've noticed most folks don't look at all the facts that go into the reasoning that Ford used in making their recommended fluid change schedules. If lubricant was the only factor then a long schedule may appear to be the way to go. It is a fact that the rear axle is not a hypoid type so it has a lot less gear tooth surface area for wear and wear they do. The metal particles build over time and they need to be removed to keep things wearing normally. Another thing that can effect lube quality is condensation. A car that is driven long enough to get fully warmed up will vaporize some moisture but not all cars get fully warmed and driven a lot of miles. Any moisture in there will get acidic over time and start corrosion during long periods of inactivity.
Change the lube like Ford recommended and stuff will last a lot longer. Changing lube is cheaper than changing worn out parts. |
07-25-2022, 11:40 AM | #15 |
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Re: Differential Fluid Change Interval
Hello, the original oil change and fluid changes were recommended probably due to the amount of dirt roads of that era , when I bought my first Model A in late 1960,s still a lot of “old timers “around I remember them saying dirt would wear out engines in less than 30,000 miles. Ford did increase oil changes to 1000 miles . I use that as time for my 31 if it had a filter could go longer. Differential and transmission at around 2500 with oil from Snyders.As the previous post mentioned condensation is also a concern on car infrequently driven cars, and oil cheaper than repair.
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