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What is that milky fluid on my RX-8's oil dipstick?

 

comments7 comments. Current rating: 4 stars (1 votes). Leave comments and/ or rate it.

Question:

I found a milky fluid on my RX-8's oil dipstick - what does that mean?

Answer:

This milky substance does not affect engine performance or any other functions of the vehicle. During cold weather, moisture contained in blow-by gases (exhaust, oil, fuel, water vapor) is cooled by the intermediate housing wall and condenses due to difference in temperature. A chemical reaction between the moisture reacts and the engine oil in the intermediate housing will yield the milky fluid. This fluid then eventually dissipates
as the engine warms up to full operating temperature.

The milky fluid does not affect the quality of the engine oil and therefore the engine performance is not affected either. Mazda has verified that the amount of moisture in the oil is within the acceptable standard for motor oils commonly found in the market.

However, you should verify that the coolant reservoir is full and that there is no sign of engine coolant leakage.

You can also go to you Mazda dealer and ask for a new oil level gauge tube plastic insert which has been developed as a countermeasure to keep the milky substance off of the dipstick (however, the substance will still be in there- it's a cosmetic fix only).


Comments:

2007-04-11, 00:43:11
anonymous from United States  
in my world, it usually means a blown head gasket from water or coolant mixing with oil
2007-04-20, 06:50:05
[hidden] from United Kingdom  
rating
Hi There,

If it is a blown head gasket does anybody have an idea of a cost to replace this? Tried having a look round but could find no idea anywhere?

thanks
2007-07-25, 08:48:05
anonymous from Australia  
Renesis Engines dont have pistons or a head so I'm guessing that it wouldn't be a gasket.
2007-12-31, 14:12:19
anonymous from United States  
THE RX-8 DOES NOT HAVE A HEAD, THUS NO HEAD GASKET..............
2008-01-09, 14:55:29
anonymous from United Kingdom  
Don't forget, this isn't a reciprocating engine!!! It is a Wankel rotary type so normal engine principles aren't accurate!!!
2008-01-24, 09:12:53
anonymous from United Kingdom  
What shall I do if I have the milky susbstance and my engine coolant reservoir is nearly empty???
2008-03-15, 13:44:18
anonymous from United States  
fill you reservoir

 

 

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