| sarahcecelia | -- 05-28-2024 @ 12:01 PM |
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I think I have told this story before on his forum; but back in 1963 I was aVW mechanic and older guy told me the brake cylinders rust and pit because brake fliud was a combo of Glycerine and Alcohol; alcohol was the vehicle; and glycerine was the lubricant; and alcohol is a "SPONGE to any mosture!" That's why in later years brake fluid was changed to SILICONE.My question is; Should dot 3, or dot 5 be used in my 1950 Ford?I used to know but have long forgotten;and I am about to change all 4 wheel clinders, and want to flusk and replenish with the proper one. Regards, Steve Lee
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| carcrazy | -- 05-28-2024 @ 2:22 PM |
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Your car was originally equipped with DOT 3 brake fluid from the factory. DOT 3 would be the correct brake fluid to use if you are restoring the braking system. If you want to use a brake fluid with a slightly higher boiling point, you can use DOT 4. DOT 3 and DOT 4 are compatible with each other so you could use either without having to totally flush the system. DOT 5 is not compatible with either DOT 3 or DOT 4. Do not introduce DOT 5 into a system which has previously used DOT 3 or DOT 4.
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| Drbrown | -- 05-31-2024 @ 8:48 AM |
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I agree with carcrazy. I've also heard, but not verified, that DOT 5 can leak from the system more easily. To address moisture accumulation in the fluid, and for a relatively small cost, I have my '47 brake system drained and refilled every 2 or 3 years.
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| 1934 Ford | -- 06-10-2024 @ 9:27 AM |
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My Early Ford v8's all have mechanical brakes, not using any brake fluid. My later collector cars use Dot 5. The 40 Ford Pickup has had Dot 5 for 40 years. My 81 El Camino has Dot 5 for 10 years. #1 Drain the Dot 3. #2 Blow out the lines, #3 Rinse with alcohol and blow out the lines and master cylinder, fill with Dot 5. Love it! **I did it when I did a brake job and replaced all the wheel cylinders. 1934 Ford's since 1972
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| trjford8 | -- 06-10-2024 @ 10:07 AM |
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When I replace a brake system I always use Dot 5. Neve has a problem with it. This is one of those items that comes down to personal choice.
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| EFV-8 Club Forum : | https://www.earlyfordv8.org/forum |
| Topic: | https://www.earlyfordv8.org/forum/viewmessages.cfm?Forum=18&Topic=17060 |