Mazda Repair Questions? Ask Mechanics for Answers ASAP
Hi There, I'm Clayso a certified master automobile technician with 30 years of automotive repair and diagnostic experience and I'm here to help with this problem. Additional services may be offered for detailed information.
In February 2005 Mazda Motor Corporation issued a technical service bulletin concerning a milky substance on the dipstick. Ask you dealer about TSB: 01-050/06. If the milky substance is to much of a bother there is a service procedure for replacing a hose in between the intake air hose and the oil filler pipe. The labor for replacing this hose is 1.2 hours plus parts.
On some rotary engines, during engine oil level check, a milky substance sticking to the oil level stick may be found. This milky substance does not affect engine performance or any other functions of the vehicle. During cooler weather, moisture contained in blow-by gases (exhaust, oil, fuel, water vapor) is cooled by the inter-mediate housing wall and condenses due to difference in temperature. The moisture reacts chemically with the engine oil in the intermediate housing and the milky substance appears. The substance eventually dissipates when engine reaches full operating temperature. This milky substance does not affect the quality of the engine oil and engine performance is not affected. Mazda Motor Corporation has verified the amount of moisture in the oil is within the acceptable standard for motor oils commonly found in the market.
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