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Thread: oil changes for RX-7

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    Senior Member | IA Veteran  OneSlow5pt0's Avatar
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    Default oil changes for RX-7

    im changing the oil for the first time 2morrow on my RX-7..ive put 3,600 miles on it since i bought it,and the oil had just been changed when i bought it,so how long u think u should go with a RX-7 before changing oil

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    ~Flippy~ Lotte's Avatar
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    With my 7, I'm planning to change the oil every 2,000 miles.

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    Slowest Car on IA David88vert's Avatar
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    Change every 4K miles or sooner. Oil is cheap.

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    Senior Member Boosted FC's Avatar
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    Quote Originally Posted by David88vert
    Change every 4K miles or sooner. Oil is cheap.
    Not on a Rotary. You should do it every 2500-3000. Even with Synthetic you want to be on top of the oil changes with these motors.

    2013 Corsa Blue Optima SX 2.0T

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    Slowest Car on IA David88vert's Avatar
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    Never use synthetic in a rotary. Synthetic does not burn clean. You do not really want to inject synthetic into the combustion chamber.
    MazdaTrix has the best explanation for it: http://www.mazdatrix.com/faq/synthetc.htm

    I have spent a lot of time and money investigating oil and motors - and mainly on rotarys. I also am one of the few people that has not blown up numerous 13Bs. Now if you have the oil injection system blocked off, and are running pre-mix only, then synthetic is ok, but I still wouldn't waste the cash on it.

    It definately does not hurt to change the oil very often, but your driving style and how hot you get the oil makes a difference. Most street driving is fine at 4K and under. Of course, if you are racing or doing track days, you should have fresh oil before you start, and change again after finishing a race/track day.

    A good online knowledge base: Felix has had one of the best rotary sites for over a decade. He is also very knowledgeable about rotarys and oil.
    http://mrmazda.no-ip.com/
    Last edited by David88vert; 03-03-2007 at 11:34 AM.

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    Senior Member | IA Veteran  OneSlow5pt0's Avatar
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    yea,it says 5k for normal driving or 3k for extreme driving...i just changed it with 3,600 today,put valoline in it

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    ~Flippy~ Lotte's Avatar
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    I guess I will be saving some money than wasting it on synthetic oil.

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    AKA: "GearHeadMike" Five*Star*'s Avatar
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    I have heard that Royal Purple is a good rotary oil, but maybe it's only on racing applications with a pre-mix.

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    Senior Member Boosted FC's Avatar
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    I've been using Mobil1 for years. Also have the oil metering system removed.

    2013 Corsa Blue Optima SX 2.0T

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    Quote Originally Posted by Trini4U
    I've been using Mobil1 for years. Also have the oil metering system removed.
    I use Mobil1 oil and filter as well, good stuff


    Just to toss it out there, if you don't change the oil filter out every 5,000 miles or whatever you want to gauge it, it's not going to kill anything. But it's not recommended hehe

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    WhatWouldJesusDrive?
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    hey just wondering but what type of oil do you use in your 7 in the spring/ sumer time for semi race driving

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    AKA: "GearHeadMike" Five*Star*'s Avatar
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    Quote Originally Posted by Tuner_13BFC
    hey just wondering but what type of oil do you use in your 7 in the spring/ sumer time for semi race driving
    10w40 or 20w50

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    Slowest Car on IA David88vert's Avatar
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    Quote Originally Posted by Five*Star*
    10w40 or 20w50


    same here. depends on temp and type of driving

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    Slowest Car on IA David88vert's Avatar
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    You are talking about running premix. It works, burns cleaner, but is a PITA to keep up with. You basically have to carry your oil around with you, and add it everytime you fill up. Great for a racecar, not really fun for a DD.

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    Quote Originally Posted by David88vert
    You are talking about running premix. It works, burns cleaner, but is a PITA to keep up with. You basically have to carry your oil around with you, and add it everytime you fill up. Great for a racecar, not really fun for a DD.
    lol sounds like me, every where i go my tunk has coolant and oil

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    Halfshaft5 halfshaft5's Avatar
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    Hey, I am a mobil1 junkie but not in Rotories, bad ideas, even with oil metering removed. David88vert hit the nail on the head with the link he posted. I use Valvoline VR1 and change every 1500 miles, not a daily driver though so if you DD then a little longer is ok too. I have not bought into the whole idea of premix yet, it tends to wear out plugs too quick for me, and at $15-$20 a plug, thats too much maint. for me and I cant seem to see the effects. And BTW never run premix with emissions car, the cats will hate you for it and raise your EGT's to a very high number and melt the cats down.....Seen it happen. Thanks and God bless
    93 RX7 Silver R1 Rebuilt title, mod'd w/ more to come
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    06' MazdaSpeed6 turbo,6sp, AWD
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    IA Retiree Twinnos's Avatar
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    im running Idemitsu syn oil in mine right now and so far so good. they sell it at: www.rx7.com

    "Never heard of Idemitsu oil? Don’t be too surprised. After 90 years, Idemitsu has just made itself available to the American public. Here are a few things you probably didn’t know:

    • Largest Japanese oil manufacturer in the world.
    • Exclusive supplier to all Japanese OEMs.
    • Largest producer of custom blended oils.
    • Supplier of custom competition blended oils for Mazda’s racing efforts.

    What does this mean to us Rotarians? Now we can use the oils that is based on technology that helped Mazda win the 24 hours of LeMans. Nothing speaks better for oil’s effectiveness than the ability to survive that extreme punishment. We’ve tested this oil in both of our race cars. Our world famous RX7.COM “Stars and Stripes” championship winning car puts severe stresses on the engine bearings. We’ve never had any problems whatsoever with Idemitsu oils. Being turbocharged and nitrous-fed, there is no harder test for an oil. In addition, Ken Scheepers has relied on Idemitsu oils to keep his RX7.COM sponsored All-Motor engine together. Now that you know the name, buy a few bottles, your engine will thank you."

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