what are the best fluids to use for motor oil, tranny, brakes, and all other lubes for a 94? also what are the temps / weights of oil needed?

I would recommend Royal Purple, Amsoil, or some other high quality synthetic for your engine. As far as your tranny I like Redline, and for braking- I like Motul. The viscosity depends on how you plan to use your car.

I use Castrol Formula R Synthetic 10W-60. Was recommended by a friend who has used it for a while in his drag and street car, but besides not being cheap I haven't had any issues with it. Before getting rid of my oil metering I was using Castrol GTX. I think as long as you use a good quality oil and change it regularly (which is probably more important) you'll be fine. I don't have any preferences for trans and brake fluid, certainly things I need to look at.

I don't have any issues with mineral, I used to use it.

I use Castrol GTX for engine oil and a mobile 1 filter. I change it every 2000-2500 miles. The mobile 1 oil filter is probably over kill, especially when looking at the price...

For the tranny and diff I use mobile 1 syn oil. I was going to get some neo but I just keep forgetting to order some. It's just easier to buy stuff from the auto zone a few blocks away.

Brakes - valvoline syn stuff from auto zone.



I also use some kind of valvoline premix. I still have my omp but I still give it a shot of premix on each fill up.

For me the best is what's close to the house and available when I need it. Somethings I just don't like to order. I've never bothered to read the big ass write up on oil filters but to me most are probably just a **** hair off as far as filtering anyway. I also don't count every penny I spend in the part stores. If I did that I wouldn't own a RX-7.

The count every penny comment wasn't really directed towards you. I was just putting that out there because most people think that spending $10 on an oil filter that is changed every 2000-2500 miles is crazy.



I think most RX-7 owners are beyond crazy...

how mcuh are the oem oil filters in the states? i'm paying 7bucks CDn.. which is baout 5bucks USD for one

I use Amsoil. They sell it here at my local Super Track The oil seems to be pretty decent still when it gets changed out generally ever three months or so. My car does not get driven every day. I put Mobil One 75/90 in the trans and diff last summer and they both seem to be quiet and the heat from the trans tunnel is not to bad so I ama happy with it thus far. No other tests though https://www.nopistons.com/forums/pub...#>/biggrin.png As far as oil filters I use the K&N ones because the have handy 1" head on the top of the filter so it can be tightened with a socket. It's a little pricey though at about twelve bucks. I also premix with Maryel mystery oil or whatever two stroke oil I happen to have handy when heading to the gas station.

I just use the Mazda one. Have never used any other ones.

Currently have Redline in transmission and Differential with no complaints. But switching to NEO this winter while the car's up.

Valvoline or Castrol 20w-50 in summer. 10w-30 in spring and fall. Or, occasionally I find Mobile 1 15w-50 on sale. God loves WALMART. https://www.nopistons.com/forums/pub...IR#>/smile.png

PurOne Filters.

http://bakerprecision.com/neocirc.htm



75w-90HD Transmission and Diff

Yes. That's what I understand. But I guess you could call them to make sure. I started thinking about it last year. Basically, I couldn't find anyone who'd switched to NEO and WAS NOT happy. Excuse the cross-forum link:



http://www.rx7club.com/showthread.php?t=37...ght=neo+redline

I use Royal Purple 10w30 for the engine and 75w90 for the trans and diff

since he can't handle my posts ill just summarize what i said



Best oil - Valvoline VR1 20w50



Best filter- Stock

wow thanks guys! haha i forgot i even posted about this. https://www.nopistons.com/forums/pub...1047683664.gif nopistons were you saying i dont like your posts? https://www.nopistons.com/forums/pub...1047683785.gif yours are always the best! https://www.nopistons.com/forums/pub...1047683785.gif they make me laugh, so straight to the point. https://www.nopistons.com/forums/pub...IR#>/happy.png

Nah, I think he and the mod had a difference of opinion about oil filters and just those posts were deleted.



On the filter issue...FWIW, I chose PureOne filters because:

They have a good filtration and flow well... by all accounts that I've read anyway.

They have the anti-drainback valve just like the OEM

They seem to have a very good gasket that has never stuck or rolled for me.

They occasionally go on sale at the local ADVANCED AUTO, which is minutes from my house as opposed to driving at least 25 minutes to the nearest MAZDA dealer for the OEM filters that never go on sale and IIRC, are more expensive to begin with.

Another possible selling point to PureOne for some is that they're available in slightly larger that OEM size (PL14610), although a bit harder to put on and take off due to the longer demension. Personally I just stick with the standard size (PL14612)

In the final annalysis, I don't think you can go wrong with any of the filters mentioned in this thread.