Royal Purple Oil
10-14-2007, 05:51 PM
#27
Destroying Threads
Guys, Please do not use 5w20 oil on your rotary engines. You will destroy them ! Use 10w30 Royal Purple. I got my buddy from Australia to send me the recommeded oil viscosities, and most places in Canada the US should be using 10w30oil. 5w30 is only recommended for very cold climates which I doubt people actually drive their rx8 in. And 5w20 is only recommended if its the special formulation MAZDA oil.
The reason for Mazda Canada and US recommending 5w20 is due to Ford's involvement in Mazda, and its cheaper for them to have one oil than a bunch of different ones. It was also an attempt to try to get badly designed ineffecient Domestic engines to get better fuel consumption by using super thin oil which inherantly causes less drag internal to the engine. They really don't care if your engine doesn't have adequate protection, and are going on the gamble that most engines will still last to the 100,000km mark before failing even with oil that is too thin. Just do your own homework and you'll quickly discover that one of the best oils to use is a 10w30 weight oil. Why not a broad range like 5w50 ? Well the wider the viscosty range the more polymers the oil has in it and that reduces the quality of the oil.
The reason for Mazda Canada and US recommending 5w20 is due to Ford's involvement in Mazda, and its cheaper for them to have one oil than a bunch of different ones. It was also an attempt to try to get badly designed ineffecient Domestic engines to get better fuel consumption by using super thin oil which inherantly causes less drag internal to the engine. They really don't care if your engine doesn't have adequate protection, and are going on the gamble that most engines will still last to the 100,000km mark before failing even with oil that is too thin. Just do your own homework and you'll quickly discover that one of the best oils to use is a 10w30 weight oil. Why not a broad range like 5w50 ? Well the wider the viscosty range the more polymers the oil has in it and that reduces the quality of the oil.
10-14-2007, 06:28 PM
#28
Banned
Join Date: Sep 2007
Location: Waukesha Wisconsin
Posts: 2,643
Likes: 0
Received 0 Likes
on
0 Posts
Guys, Please do not use 5w20 oil on your rotary engines. You will destroy them ! Use 10w30 Royal Purple. I got my buddy from Australia to send me the recommeded oil viscosities, and most places in Canada the US should be using 10w30oil. 5w30 is only recommended for very cold climates which I doubt people actually drive their rx8 in. And 5w20 is only recommended if its the special formulation MAZDA oil.
The reason for Mazda Canada and US recommending 5w20 is due to Ford's involvement in Mazda, and its cheaper for them to have one oil than a bunch of different ones. It was also an attempt to try to get badly designed ineffecient Domestic engines to get better fuel consumption by using super thin oil which inherantly causes less drag internal to the engine. They really don't care if your engine doesn't have adequate protection, and are going on the gamble that most engines will still last to the 100,000km mark before failing even with oil that is too thin. Just do your own homework and you'll quickly discover that one of the best oils to use is a 10w30 weight oil. Why not a broad range like 5w50 ? Well the wider the viscosty range the more polymers the oil has in it and that reduces the quality of the oil.
The reason for Mazda Canada and US recommending 5w20 is due to Ford's involvement in Mazda, and its cheaper for them to have one oil than a bunch of different ones. It was also an attempt to try to get badly designed ineffecient Domestic engines to get better fuel consumption by using super thin oil which inherantly causes less drag internal to the engine. They really don't care if your engine doesn't have adequate protection, and are going on the gamble that most engines will still last to the 100,000km mark before failing even with oil that is too thin. Just do your own homework and you'll quickly discover that one of the best oils to use is a 10w30 weight oil. Why not a broad range like 5w50 ? Well the wider the viscosty range the more polymers the oil has in it and that reduces the quality of the oil.
10-15-2007, 01:02 AM
#29
they use 5w20 because of Ford and stupid EPA requirements (Emission related)
they just started with the *5w20* bullshit not long ago, so lets just wait, lots of engine gonna die within the next 10 years for *no* special reason.
Im gonna stick with 5w30, maybe 5w40 later. Still has a lot of RP 5w30 left in my garage.
They say is *ok* to use 5w20, they said they *tested* it.
I think GM said they tested their *DexCool*, suppose to cool better and last longer. Look what happen to their engines ?
they just started with the *5w20* bullshit not long ago, so lets just wait, lots of engine gonna die within the next 10 years for *no* special reason.
Im gonna stick with 5w30, maybe 5w40 later. Still has a lot of RP 5w30 left in my garage.
They say is *ok* to use 5w20, they said they *tested* it.
I think GM said they tested their *DexCool*, suppose to cool better and last longer. Look what happen to their engines ?
Last edited by nycgps; 10-15-2007 at 01:04 AM.
10-15-2007, 09:11 AM
#31
The reason for Mazda Canada and US recommending 5w20 is due to Ford's involvement in Mazda, and its cheaper for them to have one oil than a bunch of different ones. It was also an attempt to try to get badly designed ineffecient Domestic engines to get better fuel consumption by using super thin oil which inherantly causes less drag internal to the engine. They really don't care if your engine doesn't have adequate protection, and are going on the gamble that most engines will still last to the 100,000km mark before failing even with oil that is too thin.
10-15-2007, 09:17 AM
#32
Here is one argument that everyone will have an opinion on. This was one of the primary questions I asked when I first purchased my 8. The Mazda dealer told me not to use synthetic and use 5-20. In our climate it did not seem to be the correct viscosity. So I asked the one person that I respected for the rotary engine (at that time), Guitar Junkie (may he rest in peace) told me to use 5-30 Royal Purple or Redline. Since that time I have never heard from any one with extensive rotary knowledge that his advise was in error.
10-15-2007, 11:14 PM
#33
Rotary wanabee
iTrader: (1)
Join Date: Jul 2007
Location: Long Island, NY
Posts: 1,978
Likes: 0
Received 0 Likes
on
0 Posts
I have mixed the viscosities.... ill admit it .. I am a bad person. the 1st 4 quarts are rp 5w20 and the rest (and top offs) is 5w30
people may ask .. why do this. well ... i dont remember ... something some one told me try when i was in rockingham with my turbo gsxr
i never looked back.
also the best way to change your oil is with an oil pump .... you can get one under 100 bucks.
1. stick straw in hole ..... turn on pump ... go drink a frosty beverage.
bam! done hahaha
people may ask .. why do this. well ... i dont remember ... something some one told me try when i was in rockingham with my turbo gsxr
i never looked back.
also the best way to change your oil is with an oil pump .... you can get one under 100 bucks.
1. stick straw in hole ..... turn on pump ... go drink a frosty beverage.
bam! done hahaha
10-16-2007, 01:14 PM
#34
Registered User
Join Date: Oct 2007
Location: Florida
Posts: 40
Likes: 0
Received 0 Likes
on
0 Posts
ok im a new rx8 owner and i want to get this right.
when i do my first oil change i can use an oil pump to get all the oil thats in my motor out and then pour in 5w-30 rp in?
and i want to get this right.when i do my first oil change i can use an oil pump to get all the oil thats in my motor out and then pour in 5w-30 rp in?
10-16-2007, 01:21 PM
#35
Destroying Threads
can you really mix viscocity safely? cus I just changed my oil with RP 5w20, but I am thinking of putting in 5w30 when my car drinks some of the 20s up
10-17-2007, 11:09 AM
#46
Banned
Join Date: Sep 2007
Location: Waukesha Wisconsin
Posts: 2,643
Likes: 0
Received 0 Likes
on
0 Posts
