Who likes Amsoil better than Royal Purple?
10-29-2004, 01:04 AM
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Who likes Amsoil better than Royal Purple?
Ok, I've done a search and a couple of you are using Royal Purple. Have you tried Amsoil? And compared it to Royal Purple? or Redline? I've heard a lot of good things with Amsoil (esp. from the Audi drivers) and the Amsoil 5-20 meets the requirements for the RX8. Anyone hook on Amsoil for their RX8?
10-29-2004, 06:53 AM
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10-29-2004, 10:49 PM
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Royal Purple
I've been using Royal Purple 5w30 in the engine for quite awhile, 75w90 in the trans & diff. 
It works great, the engine is smooth, burns a little less oil than dino. My trans shifts like silk and when idling with the car in netural the trans is quiet, compared to the stock gear oil, my diff hops a little less on kick *** starts so, I sleep well at night knowing I've given my 8 the best of care.
The motor oil is API, SL GF-3 rated, just what Mazda requires in a motor oil and the gear oil is GF-4 & GF-5 rated with a limited slip diff additive built into the oil.
Royal Purple is also recommended by Racing Beat and their engineers as being a good synthetic for the RX-8 and have dynoed the oil in a RX-8, only to be surprised to see that it actually gives more HP!!
So, take it from there...........Mike Z :D
It works great, the engine is smooth, burns a little less oil than dino. My trans shifts like silk and when idling with the car in netural the trans is quiet, compared to the stock gear oil, my diff hops a little less on kick *** starts so, I sleep well at night knowing I've given my 8 the best of care.
The motor oil is API, SL GF-3 rated, just what Mazda requires in a motor oil and the gear oil is GF-4 & GF-5 rated with a limited slip diff additive built into the oil.
Royal Purple is also recommended by Racing Beat and their engineers as being a good synthetic for the RX-8 and have dynoed the oil in a RX-8, only to be surprised to see that it actually gives more HP!!
So, take it from there...........Mike Z :D
11-04-2004, 07:33 PM
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Originally Posted by Mike Z
I've been using Royal Purple 5w30 in the engine for quite awhile, 75w90 in the trans & diff.
It works great, the engine is smooth, burns a little less oil than dino. My trans shifts like silk and when idling with the car in netural the trans is quiet, compared to the stock gear oil, my diff hops a little less on kick *** starts so, I sleep well at night knowing I've given my 8 the best of care.
The motor oil is API, SL GF-3 rated, just what Mazda requires in a motor oil and the gear oil is GF-4 & GF-5 rated with a limited slip diff additive built into the oil.
Royal Purple is also recommended by Racing Beat and their engineers as being a good synthetic for the RX-8 and have dynoed the oil in a RX-8, only to be surprised to see that it actually gives more HP!!
So, take it from there...........Mike Z :D
It works great, the engine is smooth, burns a little less oil than dino. My trans shifts like silk and when idling with the car in netural the trans is quiet, compared to the stock gear oil, my diff hops a little less on kick *** starts so, I sleep well at night knowing I've given my 8 the best of care.
The motor oil is API, SL GF-3 rated, just what Mazda requires in a motor oil and the gear oil is GF-4 & GF-5 rated with a limited slip diff additive built into the oil.
Royal Purple is also recommended by Racing Beat and their engineers as being a good synthetic for the RX-8 and have dynoed the oil in a RX-8, only to be surprised to see that it actually gives more HP!!
So, take it from there...........Mike Z :D
the tranny noise in neutral is really getting on my nerves also. . .so i will thank you in advance letting me know how to reduce it!!!!
Last edited by RotaryDrifting; 11-04-2004 at 07:52 PM.
09-11-2013, 09:53 AM
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05 RX8 Sold///05 Evo VIII
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My only experience with Amsoil was in our 600RRs(2006 & 2007). They both use a wet clutch. The result was very sticky shifts that felt like ****. If I hadn't changed the oil myself or known it was Amsoil I would have been under the impression someone just put O'reilly branded automotive oil in our bikes.
Bottom line: waste of money.
Honda 10W-40 at ~$4/quart shifts like butter.
Bottom line: waste of money.
Honda 10W-40 at ~$4/quart shifts like butter.
11.9% APR, WTF.
09-11-2013, 10:19 AM
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05 RX8 Sold///05 Evo VIII
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Yeah interest rates are great right now. Just bought my second home under 4%. Doubt we'll see that again!
That was a sweet little race they had there though. Topped out at 60mph?
That was a sweet little race they had there though. Topped out at 60mph?
09-11-2013, 10:49 AM
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If I remember correctly from reading and talking to folks, only born in 79, prices on homes and goods were far less than today per the average wage even during the inflation period. For instance a person may make $25,000 a year, but the average national price on a new home was $30,000. Versus now, with home prices through the roof. This was especially true in rural areas. Today the cost of farm machinery or farm land is astronomical. The same was for cars than versus now. Am I too far off on that Al?
Speaking of inflation, get to know some Brazilians and learn about the hyper inflation they went through. It's crazy what they experienced.
Speaking of inflation, get to know some Brazilians and learn about the hyper inflation they went through. It's crazy what they experienced.
09-11-2013, 11:25 AM
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I guess that means I'm way off base.
And to stay on topic, I use amsoil in my FD, I used it in my old miata and tried it in my 8. I like it mostly for the Diff and Transmission, but when I put it in my RX8 trans I started to get the 1 - 2 grind. It shifted like butter other than under hard acceleration and I think a lot to do with my problem is my master/slave. The redline just masks the issue better. I had to replace the master and I think the slave may be bad as well. However, I'll just stick with readline instead of wasting money again.
And to stay on topic, I use amsoil in my FD, I used it in my old miata and tried it in my 8. I like it mostly for the Diff and Transmission, but when I put it in my RX8 trans I started to get the 1 - 2 grind. It shifted like butter other than under hard acceleration and I think a lot to do with my problem is my master/slave. The redline just masks the issue better. I had to replace the master and I think the slave may be bad as well. However, I'll just stick with readline instead of wasting money again.
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