No, why? It isn't particularly expensive and it is virtually chemically-inditinguishable from significantly more expensive synthetics.

It is certainly better than any conventional oil and I've been using it almost exclusively in my cars since 1993.

 

why,
the comments made by the higher ups at mazda in the seven stock thread.... i can find it if you like... pm me if you want it...

i am not bashing... just making an observation.

plus rp in the five gallon jug is a deal...

beers

 

OK. I'll bite. Put the link here since this is an oil discussion of sorts.

I'm sure the RP is great stuff. So is Amsoil.

However, it is hard to beat $20 for a 5 qt. jug of Mobil 1.

You do realize that all synth motor oils are essentially the same oil stock and that, even at minimums, the cheapest pure synth oil still surpasses the performance of dino oil?

I don't really care about the detergents and other junk. I change my oil too frequently for it to matter.

EDIT:

I found the old post by RG about the conversation he had (in Engrish) about the use of synth oil in a rotary.
Multiple endorsements for synth in general. One obtuse reference to Mobil 1 being the "worst" choice of the available oils. I'll take that with a grain of salt.

 

that climb is really fun. i left Nemesis *and a bunch a 7s so far behind me doing that hill that i waited for over 5 minutes at thr top befor eany of them caught up. i wasnt checking vacuum or anything else at the time but my oil usage on that trip was significantly lower than what i thought it would be - i only added maybe half a court once the whole trip to 7stock and back.

its not the hill obviously just that i really drove my car hard several times on tha trip and it definetly drove and idled better afterwards for awhile. definelty burning carbon off and leaving less behind i think. better compression and ignition (because the plugs are nice and clean)

 

yep,

and kinda...

give me a few, this might take awhile...

beers

 

The RP is $114 per 5 gal pail right now thats about $28.50 per 5 qts...so it hasn't gone up that much...only about $5 since last time I bought it. This is for the standard 5-20, 5-30, 10-40, grades. The racing oils are more expensive....

 

wow,
last time i got it it was 102 shipped...

beers

 

damn you, and i searched for at least 3 min to find that..... my guess is it is the old seal thing.... but here is the link.

https://www.rx8club.com/showpost.php...2&postcount=74

once again i am not bashing...

beers

 

Yeah, that's the one. Just too much second-hand info with no science. I don't care how big the name, no science equals no cred.

 

I noticed very similar results but I have not changed to any higher viscosity. Anyway, it was a mostly highway trip for about 200 miles and it involved...lets say sum very fun driving . Anyway, in town I get about 170-200 mpg. After this trip which involved several runs to 9k, I noticed I had gone over 200 miles and still had more than a qtr tank left! It really made me wonder, but I was happy. I want to tun a thicker viscosity oil, especially since its summer time now and its getting hotter. My idle is not very good, but it is a little lean for my tastes. I heard that rotaries should idle at 11.5 or so. My idle is between 15 and on occasion spikes to over 16. I am wondering how to reduce the fuel at idle. Any experienced emange people reading?? I would like to use heavier oil and add sum fuel at idle, and I think it would help sum.

 

i tried 20w50 here in South Africa, and my MPG went from 15 to 22, my 8 is doing 33000kms and i'm using 95 octane unleaded

 

Wow, thats huge! Any other success stories??