I always use Castrol GTX 10W30, but I was reading on rx7.com that turbo rotaries should use 20W50. How true is this? I noticed that my car started smoking a little bit, most noticeable when pegging the gas pedal on idle, fully warmed up BTW.

Thanks

 

May 2004? I was expecting to come in to see a Dec 2007...

Depending on climate, a lot of FD owners use 20W-50 in summer, 10W-30 in winter.

 

yup ^ i alternate depending on season/temperature

 

That is exactly what I am doing, LOL, but I read the Rx7.com thing and I was like, WTF! Anyway, much appreciated.

 

also go for more viscous if you're leaking any, for obvious reasons

 

10W-30 is fine for all around weather/driving.

Hotter climates, long city driving (especially in warmer areas), track driving, 20W-50.

 

It depends how bad the snow storm is...

 

**** man..have you been hiding under a rock

everyone knows 20w50-summer 10w30-winter

 

I run the crappiest 10W 30 I can find. Never had any issues.

 

Not hiding under a rock, LOL. I should've put my flame retardant suit on. Flame on, flame on.

 

This will always be a discussion... always.

 

+1

 

what about 15W50... i have a few of them free of charge...
but i notice white smoke when i drive it hard...

 

Ive been runing castrol 20w50 for years all year round and love it.

 

10w30 idemitsu, love it

mazda recommends 5w30 for temps <0 Celcius
and 10w30 for 0< Celcius

 

I've had lots of FDs, they all get fuel dilution if driven under boost much. Given the fuel dilution issue I'd run the thicker oil 20W50.

BTW I never had to replace a set of turbos!