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Old 03-28-2011, 06:49 PM
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bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 21,279
Mein Auto: 02 BMW 525i M54 auto 130K
Would this fluorescent-dye test work for testing whether an engine has a major problem?
- Bad electric thermostat causing rough or fluctuating idle-

Quote:
Originally Posted by BigCo540i View Post
*UPDATE *
Rough idle solved. Just got her back from the shop and everything is running great. They put florescent dye in the oil and coolant that will light up with a certain type of light if any leaks were to appear. 2 year 24 month warranty on the work.

The inside of my engine was really clean with no sludge and hardly any wear on the cam lobes and chain guides. Synthetic has done its job for 150k mi.
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