The Ford Barn

37Ford · 04-08-2023, 02:33 PM

1948 59ab flathead engine. Engine rebuilt 12 years ago, has run fine all this time, about 25,000 miles on engine. Was time for spring oil change. Normal coolant level. Checked oil and it was at normal height and oil was black on dip stick. Started engine and let it warm up, it ran fine. Loosened the drain plug and noticed clean antifreeze dripping. Drained out about 3 ounces of antifreeze, all clear, then the old oil started draining. Normal dark black used oil, no milky color in oil. Use 50/50 antifreeze mixture. 2 loose head bolts on one side (studs 10,12 middle passenger side) 2lbs loose. Original Edmunds aluminum heads. Oil last changed 12 months ago driven about 1,000 miles last year. Plugs look good.
Car garaged, No freezing temperatures.

Thoughts

redmodelt · 04-09-2023, 09:49 AM

Question also asked on Early V8 page.

Mickd · 07-15-2023, 06:37 AM

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Doesn't sound real good. Retorqing the head might have helped.
Try adding 'Stop Leak' or Chemiweld' in the coolant. Beats pulling the heads!

04-08-2023, 02:33 PM	#1
37Ford Junior Member Join Date: May 2010 Posts: 16	Issue: 59ab - Coolant in crankcase 1948 59ab flathead engine. Engine rebuilt 12 years ago, has run fine all this time, about 25,000 miles on engine. Was time for spring oil change. Normal coolant level. Checked oil and it was at normal height and oil was black on dip stick. Started engine and let it warm up, it ran fine. Loosened the drain plug and noticed clean antifreeze dripping. Drained out about 3 ounces of antifreeze, all clear, then the old oil started draining. Normal dark black used oil, no milky color in oil. Use 50/50 antifreeze mixture. 2 loose head bolts on one side (studs 10,12 middle passenger side) 2lbs loose. Original Edmunds aluminum heads. Oil last changed 12 months ago driven about 1,000 miles last year. Plugs look good. Car garaged, No freezing temperatures. Thoughts

04-09-2023, 09:49 AM	#2
redmodelt Senior Member Join Date: May 2010 Location: Portland OR Posts: 6,341	Re: Issue: 59ab - Coolant in crankcase Question also asked on Early V8 page. __________________ I know the voices aren't real but damn they have some good ideas!

07-15-2023, 06:37 AM	#3
Mickd Member Join Date: Oct 2012 Location: Tasmania Australia. The land of the REAL Tasmanian Devil Posts: 46	Re: Issue: 59ab - Coolant in crankcase Sponsored Links (Register now to hide all advertisements) Doesn't sound real good. Retorqing the head might have helped. Try adding 'Stop Leak' or Chemiweld' in the coolant. Beats pulling the heads! __________________ Grandfathers.... 'cause we know stuff and fix things