I know about the different synthetics you can use and all that bull ****, i just want to know the most widely used Motor oil in RX-7s.

 

regular 10W-30 or 40 is common... 5W 30 if its cold... some ppl use 20W 50 and your car will sound like an indy car at high RPM's lol...
Other people recommend straight 30 wt... I've never tried this but I plan to someday when i have a spare engine lol...

 

Ok, now you're just getting annoying.

I use 20W-50, of whatever variety happens to be available.

-=Russ=-

 

Castrol GTX ot Redline

 

I personally use Castol GTX 20W50, haven't had any problems.

 

the manual says to use 20W50 for ne temp above freezing and no synth, I just do what mazda says. they also allow for 10w40 I believe if it's not really hot I think.

 

I use 15W-50 Mobil1, and at 280,000 miles who can argue?

 

i use castrol gtx 20w50...gotta lovbe the dino oil

 

20-50 Castrol . red cap, only and always for me

 

anybody here ever used straight 30w or something hellaciously synthetic like penzane? jc whether that would work

 

Castrol 20-50

 

ive been using vaseline this whole time.

 

lmfao. i am with you guys that use the castrol 20w-50. and with also of racing(drifting) it has worked out to be the best for me.

 

I've always used Castrol 20/50 in the summer with no problems. After I installed the Mazda reman. thought I would try the Rotella T 15/40. Little expensive, but affords more protection then the Castrol 20/50 which is no longer rated for diesel applications which it once was.

 

I agree, this does get annoying. I am sure that the thread starter and a few minions would flame me for saying use the damm search function, so I won't do it.

I still use GTX 20W50 in my RX fleet as I ahve posted in the past 50 threads asking this question.






Yes, I had nails for breakfast today.

 

We are talking about lubing the engine, not our *****.

 

Castrol 20W50

 

DO NOT USE STRAIGHT 30W.

Way too thick when cold and first starting... would probably cause 5 months of wear on every cold start.

And as far as weights, this is covered in the FAQ for FC at the top of the section:
as well as countless posts on what oils to use as far as brand (hell there is even a poll)

So search next time before posting!!!!

And thread closed