rx-8 oil
11-02-2004, 09:07 PM
#1
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rx-8 oil
hi
i went city mazda to buy a new battery (panasonic sealed unit) for my 1992 mx-5. only $300. greaty value considering the original battery lasted 12 years.
i noticed that they had a huge amount of rx-8 oil. i bought 5 litres.
just a question, at the last service, they put in castrol-r synthetic into the rx-8; can i put the mazda rx-8 non-synthetic oil for top-ups or should i just use castrol-r for top-ups until the next oil change?
regards
mike
i went city mazda to buy a new battery (panasonic sealed unit) for my 1992 mx-5. only $300. greaty value considering the original battery lasted 12 years.
i noticed that they had a huge amount of rx-8 oil. i bought 5 litres.
just a question, at the last service, they put in castrol-r synthetic into the rx-8; can i put the mazda rx-8 non-synthetic oil for top-ups or should i just use castrol-r for top-ups until the next oil change?
regards
mike
11-03-2004, 12:56 AM
#2
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Should not mix oil. So top up with Castrol R
You can ask them to change it to Mazda Rotary - they only charge $50 for it. $55 you get 5L and you only use 4L to change theoretically.
On Monday I went to get a Mazda logo badge. An unfortunate debadging accident.
Gomez FYI, the badge is cheap, only $25
You can ask them to change it to Mazda Rotary - they only charge $50 for it. $55 you get 5L and you only use 4L to change theoretically.
On Monday I went to get a Mazda logo badge. An unfortunate debadging accident.
Gomez FYI, the badge is cheap, only $25
11-03-2004, 04:11 AM
#4
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No problems mixing oil. Even doing a full oil change will not get all the old stuff out, here's what I posted in an earlier thread about the RX-8 engine oil capacity....
So you can see, if you dump the oil and change the filter, you only change 3.5 litres of a total 5.8 litre system. You can't get the old stuff out anyway, it'll take 3 oil changes to purge the car of the original oil. If you've got money to burn, you can do all 3 oil changes on the one day I s'pose!
Gomez.
Originally Posted by Gomez
Okay....the repair manual states 3.5 litres for oil & filter replacement.......3.3ltrs for oil only..........Dry engine rebuild capacity of 4.7ltrs, total system capacity of 5.8ltrs for single oil cooler model (that's you baby....) and 6.7 litres for the Yanks that have the 2 oil coolers on their High Power model.........
Gomez.
Gomez.
Gomez.
11-03-2004, 04:45 AM
#6
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you consume oil as well Mez, by adding the same oil with time... you will get the whole oil replaced.
I think 2 oil change rather than 3 due to the fact that rotary consume oil.
I think 2 oil change rather than 3 due to the fact that rotary consume oil.
11-03-2004, 06:46 AM
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Assuming that your oil is evenly mixed between oil changes and you don't top up, and my late night maths is correct:
After 1 change there will be 2.3L of old oil
After 2 changes there will be .91L of the original oil
After 3 changes there will be .36L of the original oil
After 4 changes there will be .14L of the original oil
So with top ups, most of the original oil will be gone on the 3rd change.
After 1 change there will be 2.3L of old oil
After 2 changes there will be .91L of the original oil
After 3 changes there will be .36L of the original oil
After 4 changes there will be .14L of the original oil
So with top ups, most of the original oil will be gone on the 3rd change.
11-03-2004, 04:19 PM
#9
rev it up
My understanding is that the Castrol R Synthetic 5w30 is semi synthetic. So I assume it would be more compatible than a fully senthetic oil as thet are both mineral based oils
For a long time it seemed that this was the only option until this new rotaty oil turned up.
However, during my last service a few weeks ago the service guy mentioned thet they use the Castrol stuff. So it seems that Mazda Australia is yet to standardise the oil issue. I purchases a 5L castrol oil a while ago and I use this for top up.
skc
For a long time it seemed that this was the only option until this new rotaty oil turned up.
However, during my last service a few weeks ago the service guy mentioned thet they use the Castrol stuff. So it seems that Mazda Australia is yet to standardise the oil issue. I purchases a 5L castrol oil a while ago and I use this for top up.
skc
11-03-2004, 04:24 PM
#10
New Member
Originally Posted by sco
Assuming that your oil is evenly mixed between oil changes and you don't top up, and my late night maths is correct:
After 1 change there will be 2.3L of old oil
After 2 changes there will be .91L of the original oil
After 3 changes there will be .36L of the original oil
After 4 changes there will be .14L of the original oil
So with top ups, most of the original oil will be gone on the 3rd change.
After 1 change there will be 2.3L of old oil
After 2 changes there will be .91L of the original oil
After 3 changes there will be .36L of the original oil
After 4 changes there will be .14L of the original oil
So with top ups, most of the original oil will be gone on the 3rd change.
We seems to have a lot of male ego in this forum LOL
I tempted to go back to Castro R, or even Redline. Anyhow, it does not make a lot of difference anyway
11-03-2004, 05:48 PM
#12
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Originally Posted by skc
My understanding is that the Castrol R Synthetic 5w30 is semi synthetic. So I assume it would be more compatible than a fully senthetic oil as thet are both mineral based oils
For a long time it seemed that this was the only option until this new rotaty oil turned up.
However, during my last service a few weeks ago the service guy mentioned thet they use the Castrol stuff. So it seems that Mazda Australia is yet to standardise the oil issue. I purchases a 5L castrol oil a while ago and I use this for top up.
skc
For a long time it seemed that this was the only option until this new rotaty oil turned up.
However, during my last service a few weeks ago the service guy mentioned thet they use the Castrol stuff. So it seems that Mazda Australia is yet to standardise the oil issue. I purchases a 5L castrol oil a while ago and I use this for top up.
skc
Originally Posted by AlexCisneros
"To answer your question, a number of years ago Mazda evaluated the
performance of synthetic oils and determined that their characteristics
may result in lower compression pressure or excess oil consumption due
to insufficient lubrication of seals and the rotor surface. In fact, the
recommendation against the use of synthetics continues to stand for
their RX rotary engine today.
Although Castrol Syntec and Syntec Blend have been used successfully in
racing RX7 vehicles with rotary engines, we cannot recommend the use of
Castrol Syntec and Syntec Blend in Mazda rotary engines, because we
respect the decision made by Mazda.
Thank you for contacting Castrol, The Technology Leader!
Castrol Consumer Relations."
performance of synthetic oils and determined that their characteristics
may result in lower compression pressure or excess oil consumption due
to insufficient lubrication of seals and the rotor surface. In fact, the
recommendation against the use of synthetics continues to stand for
their RX rotary engine today.
Although Castrol Syntec and Syntec Blend have been used successfully in
racing RX7 vehicles with rotary engines, we cannot recommend the use of
Castrol Syntec and Syntec Blend in Mazda rotary engines, because we
respect the decision made by Mazda.
Thank you for contacting Castrol, The Technology Leader!
Castrol Consumer Relations."
I'll continue to use Rotary oil, but if I'm stuck in the Simpson Desert low on oil, and the local camel herder has Mobil1 in his backpack......I'll use it!
Gomez.
11-05-2004, 04:45 PM
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OK heres update,
bought the rotry extreme from wildcard, luved the sound keeping redlined it. just couldnt help myself. went out to a pub, pulled in a straight way, blasting my friend away. and this is wat he qouted " your car sounded like a lawn moyer. " u bastard i said. but in the end it sounded like an F1 engine.hahahah. thanks WILDCARD
bought the rotry extreme from wildcard, luved the sound keeping redlined it. just couldnt help myself. went out to a pub, pulled in a straight way, blasting my friend away. and this is wat he qouted " your car sounded like a lawn moyer. " u bastard i said. but in the end it sounded like an F1 engine.hahahah. thanks WILDCARD
11-05-2004, 04:55 PM
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skc - I just had mine serviced at Aspley. Asked them what they normally put in and was told Castrol TXT Softec. I asked them to use the Mazda Rotary oil as this is what I am topping up with - they had no problems and left the remaining oil in the car for me. It ended up being cheaper than the softec, not that I was worried about price.
11-06-2004, 02:33 AM
#20
New Member
Originally Posted by stasis1
Hei Taka,
My wife is expecting soon. in the middles of December. any thoughts or advice apart from the MS baby seat
My wife is expecting soon. in the middles of December. any thoughts or advice apart from the MS baby seat
Also charge up your digicam and DV :D
04-04-2005, 05:40 AM
#21
Registered User
Sorry to bring this thread back to life, but I can not find clear information on the RX-8 oil issue. I know that I should carry at least a litre of spare oil in the car at any time, but what do I buy?
1. The Mazda oil;
2. The Castrol TXT Softec 5w-30
3. The Castrol R synthetic 5w-30
Can anyone confirm which oil Grand Prix Mazda is using these days?
Thanks
Adrian
1. The Mazda oil;
2. The Castrol TXT Softec 5w-30
3. The Castrol R synthetic 5w-30
Can anyone confirm which oil Grand Prix Mazda is using these days?
Thanks
Adrian
04-04-2005, 06:17 AM
#22
New Member
No real answer. Clam down Timbo (bark) ... sit sit good boy :p
Well there is a litre bottle of Mazda rotary oil which look quite nice. That is what I use.
Well there is a litre bottle of Mazda rotary oil which look quite nice. That is what I use.
04-04-2005, 06:24 AM
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for my 1000km service, i asked them to chuck in a 1L bottle of the rotary oil. Cost? around 10 bucks. It now sits in the storage bin between the back seats.
04-04-2005, 06:29 AM
#25
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Buy the Mazda oil IMO. It costs the same and it has been specifically designed for the Renesis. How can you go wrong?
I also don't think you need to carry a litre of oil where ever you go. Unless you think you are going to have a catastrophic leak mid drive. The Ren does burn oil, but if you check it once a week, or even once a month, you're not going to run out. I've found I burn about 250mL per 1000km.
Reminds me of my Grandmother who still drives her Gemini around with a bottle of water in the back in case the radiator overheats!
One more thing.... F-111's....
I also don't think you need to carry a litre of oil where ever you go. Unless you think you are going to have a catastrophic leak mid drive. The Ren does burn oil, but if you check it once a week, or even once a month, you're not going to run out. I've found I burn about 250mL per 1000km.
Reminds me of my Grandmother who still drives her Gemini around with a bottle of water in the back in case the radiator overheats!
One more thing.... F-111's....