NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   -   Oil Smells Like Gas (https://www.nopistons.com/3rd-generation-specific-18/oil-smells-like-gas-10080/)

rx7trix 01-01-2003 07:49 PM

Any one ever take off their oil cap and smell it ? mine smells like fuel... is that normal? Also there was some foamy white **** in there.

Shane.Trammell 01-01-2003 08:05 PM

yeah smelling like gas is normal. the gas and oil get a little mixed up

vosko 01-01-2003 08:15 PM

yup that is normal

rx7trix 01-01-2003 08:19 PM

so there is fuel in the oil?.... is that what causes the foam?.....also I use to use 20w50 in the car but rotorsports racing told me to use 10w40 ....what does everyone else use?

vosko 01-01-2003 08:27 PM

yeah after a while you get some gas in the oil. just change the oil atleast every 3k miles. i don't know what causes the foam but every car does it. maybe condensation in the oil system ? i run 20w50 castrol GTX

pengaru 01-01-2003 08:38 PM

it probably happens more often if you run rich, and from what I understand it's more common on the turbo cars. The fuel is getting into the oil system via the oil seals on the rotors.

rx7trix 01-01-2003 08:45 PM

Great I was about to get pissed I just got the car back from the shop! ok I have 1 person who uses 20 50 anyone else care to weigh in?

Fd3BOOST 01-02-2003 04:48 PM

I use 15 50 Mobil one synth.

Silver Ninety Three 01-03-2003 01:22 AM

Common on rx7s and caused by blowby. If its really bad you'll actually see your oil level increase as gas is added to it. I heard 10w40 is bad because it needs too many viscosity modifiers added to it or something. I use mobil1 15w50. I wouldn't go thinner on a modded, high hp car.


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