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Add oil between changes?
Submitted by Sleestax on Tuesday, November 8, 2005 - 8:38am

Thanks for all the great topics here. We recently purchased an 05 RX-8 GT and love it. I am new to the rotary world and have a oil-related question. I would have posted in one of the many other oil threads, but I think my Q is slightly different.

Should I be adding 5w-20 oil inbetween oil changes in order to keep the levels up, or should I just schedule oil changes more frequently? The consensus appears to be that oil changes should occur every 2500 miles, but I am wondering if I need to do it that often if I keep "topping off" the oil. I would think the filter would be good for at least 4,000 miles.

Advice is appreciated.

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subject:
Add oil between changes?
author:
date:
January 18, 2007 - 9:59pm
I'm not suprised you love your RX-8. Here is my $.02.

I change my own oil at 3,000 miles or 3 months. I use only Mazda filters.

I set oil level at 1/4 " below top full mark.

Yes, oil filter should be good for 4,000 miles or more.

I've used exxon/mobil and Mazda oil and have nearly 49,000 miles now and oil has always remained above the add line.

Surprisingly I got my best gas MPG with Mazda brand oil. Coincedence, maybe as it was light freeway traffic. I feel like I'm bragging but an honest 25 mpg followed by a tank of 24mpg.

Tim
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subject:
Oil Changes and Adding Oil
author:
date:
November 26, 2005 - 1:17pm
I have owned and professional raced many rotary cars,i.e. early 70's to present Mazdas to curently 2 RX-8's You should top off when needed. This engine will use oil for added lubrication of the seals. Also, you are throwing out good money changing oil before 6-7k miles. Stay away from synthetic oils also. Use 5-20 good quality oil.
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subject:
Check & top as needed
author:
date:
November 15, 2005 - 11:01am
I check at every fuel up, and add oil probably every 2-3 fill ups. I'd say I go 12-15 fill-ups between oil changes.
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subject:
Check and Top
author:
date:
July 28, 2007 - 5:47pm
Good to know that it isn't just my RX8 that is needing top ups, drive it like a sports car and thought that I had hurt her. Why not use synthetic oil? in the mazda shops they use a synthetyc blend. thanks
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