High Mileage Oil??
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Junior Member
Joined: Apr 2005
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From: NJ
High Mileage Oil??
Hi, I am not sure which oil to use. I keep hearing different things. 10w 30,
10w 40, 20w 50??? Which is best for the rotary engine, I have about 126,000 miles on it. Would you recommend the "High Mileage Oil". Just looking for the best oil to use. Thanks
10w 40, 20w 50??? Which is best for the rotary engine, I have about 126,000 miles on it. Would you recommend the "High Mileage Oil". Just looking for the best oil to use. Thanks
Rotary Enthusiast
Joined: Feb 2005
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From: Bossier City, LA
Ive always used Castrol GTX 20W50 also.
The way I look at it is like this...when its a warmer climate, use thicker oil, as oil thins as it's heated. If the climate is colder, use thinner oil, as it will not thin out as much.
Thats how I always thought about it, but maybe my thinking is completely flawed! LoL. I dont know. That's why Ive always used 20w50, as it covers all the temp ranges. Plus the fact that it is what my dad always used in his
The way I look at it is like this...when its a warmer climate, use thicker oil, as oil thins as it's heated. If the climate is colder, use thinner oil, as it will not thin out as much.
Thats how I always thought about it, but maybe my thinking is completely flawed! LoL. I dont know. That's why Ive always used 20w50, as it covers all the temp ranges. Plus the fact that it is what my dad always used in his
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Mechanical Engineering
Joined: Jun 2004
Posts: 1,618
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From: South Carolina
Originally Posted by rotorman85
i just put in mobil 1 in today and i like it.lets see how it works.
i did cheap halvoline 20w50 and a fram filter drives fine for me
WWFSMD
Joined: Jun 2001
Posts: 5,035
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From: SoCal
All "Mobil 1" oils are fully synthetic.
10W-40 is crap, never use it in anything
10W-30 is good for RX-7s in all climates
20W-50 is good for RX-7s in warm climates
Mineral (dino) oil changed regularly (3000 miles or less) with a good filter (not Fram -- use Mazda, Purolator, AC Delco, etc.) is appropriate for all but the most extreme uses (racing on tracks).
There are some other good choices, too, but the ones listed above will be fine.
-Max
10W-40 is crap, never use it in anything
10W-30 is good for RX-7s in all climates
20W-50 is good for RX-7s in warm climates
Mineral (dino) oil changed regularly (3000 miles or less) with a good filter (not Fram -- use Mazda, Purolator, AC Delco, etc.) is appropriate for all but the most extreme uses (racing on tracks).
There are some other good choices, too, but the ones listed above will be fine.
-Max
Senior Member
Joined: Jun 2004
Posts: 655
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From: Houston
Originally Posted by maxcooper
All "Mobil 1" oils are fully synthetic.
10W-40 is crap, never use it in anything
10W-30 is good for RX-7s in all climates
20W-50 is good for RX-7s in warm climates
Mineral (dino) oil changed regularly (3000 miles or less) with a good filter (not Fram -- use Mazda, Purolator, AC Delco, etc.) is appropriate for all but the most extreme uses (racing on tracks).
There are some other good choices, too, but the ones listed above will be fine.
-Max
10W-40 is crap, never use it in anything
10W-30 is good for RX-7s in all climates
20W-50 is good for RX-7s in warm climates
Mineral (dino) oil changed regularly (3000 miles or less) with a good filter (not Fram -- use Mazda, Purolator, AC Delco, etc.) is appropriate for all but the most extreme uses (racing on tracks).
There are some other good choices, too, but the ones listed above will be fine.
-Max
I am 2Furious
Joined: Sep 2004
Posts: 846
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From: NJ / Philly
ah, so that's what that high mileage stuff does...
There's no need to debate synthetic vs. non-synthetic here 'cause there are plenty of threads on that, probably even an answer in the FAQ (sticky at top).
There's no need to debate synthetic vs. non-synthetic here 'cause there are plenty of threads on that, probably even an answer in the FAQ (sticky at top).
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