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Oil in radiator , but there is no oil and water mixing in sump

Cleaned water system, washed all pipes, cleaned water pipes, flushed radiator ,filled clean water. As soon as i started the engine and opened the radiator filled cap, oil was mixing in the radiator . Strangely there is no water mixing in in the sump .

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What model could be intake gasket broken

Posted on Mar 29, 2015

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I am assuming its motor oil and not transmission fluid, right ?
You can have a leaking intake gasket or head gasket and get oil in the coolant without getting coolant in the crankcase.
Same thing opposite. The bigger the leak, the better the chance of getting both at the same time.

Posted on Mar 29, 2015

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Posted on Jan 02, 2017

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Trans fluid ed in coolant bottle did flush and two week brown oily goo in bottle


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Instructions on how to use holts wondarwald


Holts Wondarweld
Flush engine.
EXTERNAL CRACKS
1 Run engine until hot,drain off enough coolant to remove thermostat.
2 Remove thermostat.
3 Mix contents of can thoughoughly! and pour contents into thermostat opening.
4 Replace thermostat cover.& fill radiator with hot water,replace radiator cap.
5 Run engine at a fast idle for 15 mins,dont allow to boil.Top up if necessary.
6 Leave Wondarweld in system for 2-3 days then drain off,flush system replace thermostat and refill.
HAIRLINE CRACKS
1 MIX thoroughly and pour into cold engine (radiator if it has a cap)
2 Run engine until hot.
3 Allow engine to cool then run again until hot.
4 Follow procedure 6 above.
INTERNAL CRACKS
1 Follow external crack instructions except after pouring Wondarweld into engine remove spark plug from
affected cylinder and run engine for 20 mins. If more than one cylinder affected run for 5 minute intervals.
2 Allow engine to cool then drain cooling system and refill with clean water.
3 Drain sump & flush,refill with fresh oil.
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1990 toyota pickup is running hot and when i shut


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Check engine oil level as well, low oil will overheat engines quickly.
NEVER REMOVE THE RADIATOR CAP ON A HOT ENGINE. !
NEVER REMOVE THE RADIATOR CAP ON A HOT ENGINE. !!
NEVER REMOVE THE RADIATOR CAP ON A HOT ENGINE. !!!

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