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Old 10-13-2015, 11:26 AM   #21
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Is coolant so expensive?

Nope , the heat transfer is better with least AF .

AF has only 5/8 the heat carrying ability of just water.

Most ancient trawler engines have very low pressure caps , so a higher temp of a pressurized car or truck setup does not work.

With the right cap, a coolant recovery system will work, but fill tanks are above the engine so this does not make cooling more efficient .
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Old 10-20-2015, 11:58 PM   #22
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Does anyone know how to drain the coolant on a ford lehman 120? Can I use a vacuum and where do I suck it out from?
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Old 10-21-2015, 06:22 AM   #23
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PUSH it out thru ope pet cocks with the vacuum..
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Old 10-21-2015, 07:59 AM   #24
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Quote:
Originally Posted by Lollygag View Post
Does anyone know how to drain the coolant on a ford lehman 120? Can I use a vacuum and where do I suck it out from?
Clean the drip pan out then break loose the lowest coolant hose connection and let it drain into the pan. Shop vac out the pan afterward.

Then if you feel the need to get as much fluid out as possible you can as mentioned blow or suck more out with the shop vac.
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