I'm really new to the rotary and I really don't know which engine oil to use. Before you start flaming me, I already searched the forum.

 

whatever engine oil you want, but don't use synthetics unless they are really high quality ones.

Your best bet is to use a good quality conventional oil in a 10w40 or so depending on temperature.

You also need to read the FAQ at the top of this section, as it answers a lot of questions like this.

 

https://www.rx7club.com/showthread.p...05#post5131205

 

From the FAQ at the top of the second gen section:

What oil should I use in the FC?
According to Mazda:
In starting and operating temperatures below 20F, use 5W30
In starting and operating temperatures between 0F and 80F, use 10W30.
In starting and operating temperatures above 30F, use 20W50

As said before, stay away from synthetics unless you know what you are doing....

 

You can hardly go wrong using Castrol GTX 10w/30 year round.

 

Wow, you suck at searching, lol. Let me guess... 11B?

Try these methods:

A. FAQ Text
1. Go to the 2Gen RX-7 FAQ sticky.
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/frequently-asked-questions-2nd-generation-rx-7-faq-fc-494667/
2. Click on the link called "Lubricants and Cooling (includes Fans, oils and coolant)
https://www.rx7club.com/showthread.p...05#post5131205

B. FAQ Online Manuals
1. Go to the 2Gen RX-7 FAQ sticky.
https://www.rx7club.com/showthread.php?t=494667
2. Click on the link called "Manuals & Links"
https://www.rx7club.com/showthread.p...18#post5131218
3. Look it up in the manual so you are not at the mercy of the internet forum peanut gallery which will give you 8 wrong answers for every 2 right answers.

C. Search the forum
1. Go to the advanced search page
https://www.rx7club.com/search.php
2. Keyword(s): kind oil
3. Select "Search Titles Only"
4. Search in Forum(s): 2nd Generation Specific
5. Click on the "Search Now" button.

 

... unless you are at Ft. Campbell where the Summer weather usually hits 90degF, sometimes a little higher.

 

This is what i use and have no problems at all... like stated before stay away from the cheap synthetics and the sythetic blends

 

word, I use that oil in my 13B N/A
Going to step up in the big world when I do my turboII swap and use Royal Purple.. hehe.

 

+1 for the castrol gtx i love it in my car 238,xxx miles and is still runs... most of the time

 

+ 2 for castrol gtx =]

 

Castrol 10W30 is what I use year round in Oklahoma.

 

Castrol is pretty good oil. I have 300 thousand on my caddy and its still running strong. I use castrol 20w50 all year long because its a heavy oil and less chances of blow by in a high mileage car. On the other hand, I use it in everything else because it keeps the engine running cooler.

(JMO)

 

Castrol GTX 20w50 here.

 

+1 about horrible search skills. Amazing............................

 

20w50, Royal Purple, Redline or 15w50 Mobil1.

All no problem. FC and FE.

NYC weather, flows and starts fine.