4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

Coolant leaked, flush with vinegar & tap water?

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Old Oct 3, 2019
  #1  
Jay214's Avatar
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From: Dallas TX
Coolant leaked, flush with vinegar & tap water?

1999 4.0 4x4 83k miles
Sat for 4ish years. Needs fluids flushed.

Before I could get to this task truck leaked coolant in about 3 weeks of driving. It has a visible fresh leak streak around water pump. No milky oil but rad. reservoir was dry. To diagnose it and be sure, I want to flush/clean with vinegar and tap water, then drive it about 10 miles/day for about 3 days. I will flush tap water out with distilled water then add coolant. If I leave this mixture in it for 3 days only will tap water affect engine in those 3 days?
 
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Old Oct 3, 2019
  #2  
Turismolover22's Avatar
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From: Fort Wayne, IN
I would just flush it with water and leave it at that. Acid is not kind to aluminum.
 
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Old Oct 4, 2019
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Jeff R 1's Avatar
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From: BC Canada
Originally Posted by Jay214
1999 4.0 4x4 83k miles
Sat for 4ish years. Needs fluids flushed.

Before I could get to this task truck leaked coolant in about 3 weeks of driving. It has a visible fresh leak streak around water pump. No milky oil but rad. reservoir was dry. To diagnose it and be sure, I want to flush/clean with vinegar and tap water, then drive it about 10 miles/day for about 3 days. I will flush tap water out with distilled water then add coolant. If I leave this mixture in it for 3 days only will tap water affect engine in those 3 days?
Not for 3 days.
It's just diluted acetic acid.
 
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Old Oct 4, 2019
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Jay214's Avatar
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From: Dallas TX
Rad barely took less than half a quart of vinegar and it filled up. I thought that thing was empty. It's staying parked, I won't get to flushing it until Sunday.
 
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Old Oct 4, 2019
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Jeff R 1's Avatar
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From: BC Canada
Originally Posted by Jay214
Rad barely took less than half a quart of vinegar and it filled up. I thought that thing was empty. It's staying parked, I won't get to flushing it until Sunday.
Sunday is fine, it would take months or even years for vinegar to eat away at the aluminum.
 
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