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Lad161

Water vapor in the dipstick

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Hi, I'm sorry if this is a frequently asked question but i have a small bit of water scum showing on the dipstick of a car ive got recently, its not much as ive drained the oil and it shows no trace of water in it and the rad has no oil trace in it and isn't loosin any coolant that ive noticed. Ive good oil pressure no real start issues, any other info i need to know?

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The later 8s had a mod done by Mazda to stop this condensation build up. It's not a recall, and im unsure which year had the mod, but yeah, all good. I just had rebuild done and have not been able to open it up yet as the engine is still being run in (t-minus 200k to redline), but even my dipstick (2005 car) has the gunk... shorter journeys tend to be a cause I heard. 

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It's just down to the oil temperature not being able to come up to a level to evaporate water vapour. Some owners have used a 'mouse mat mod' to address this.

its simply a method of covering off the oil coolers - remember there are twin oil coolers which is great for hot climates but possibly a bit of overkill in Ireland- especially in winter!

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Wonder if those twin oil coolers aren't why so many pop bearings. Ayway, that's a digression.

 

I've noticed an uptick in the white scum the last few weeks as it's gotten colder. More smoke in the mornings too.

 

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20 minutes ago, Dartz said:

Wonder if those twin oil coolers aren't why so many pop bearings. Ayway, that's a digression.

 

I've noticed an uptick in the white scum the last few weeks as it's gotten colder. More smoke in the mornings too.

 

Funnily enough @Dartz - Atkins mention the following when talking about the thermal pellet upgrade that @Aido 8 mentions above - it seems the cold is a factor in reduced oil flow - smoking on start up is a sign. There is also an oil pressure regulator upgrade which is recommended to help avoid this issue;



"The factory thermal pellet acts like a thermostat for the oil system. When the oil is cold it does not allow full flow to the rotors for cooling, only enough for the bearings. As the oil warms up it allows more & more oil to flow. When this fails, it does so in the cold mode, thus not allowing oil to fully flow to the rotors, which overheats them and causes damage to the oil control rings. This does not increase oil pressure. 

When the factory thermal pellet starts going out the thing clients comment on the most is excessive oil smoke at start up, which tends to go away as the car warms up and the catalytic converter cleans up the exhaust. Some people even notice the oil pressure being slightly lower. 

Our replacement pellet keeps the engine oil in warm mode so that oil is always flowing to the shaft thus fixing the problem of the faulty factory thermal pellet."

 

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