Switched to Synthetic today
01-02-2003, 11:30 PM
#81
Senior Member
Join Date: Dec 2002
Location: San Diego, CA
Posts: 205
I have tuned and played around with MANY non rotary turbo cars in the past. Synthetic Oil is GREAT for turbocharged cars because it holds up better under high temperatures. My opinion is if the new synthetic oils don't leave ash desposits then it would be very advantageous to use synthetic oils in a turbo rotary.
One thing to be aware of is that in my experience synthetic oils will make all of your existing oil leaks a bit more severe is some cases. I'm not sure why this is.
I ran synthetic oil on a turbo volvo for 250,000 miles and the engine and turbo both performed like new the whole time. That's a long life for a turbocharger.
-John Magnuson
One thing to be aware of is that in my experience synthetic oils will make all of your existing oil leaks a bit more severe is some cases. I'm not sure why this is.
I ran synthetic oil on a turbo volvo for 250,000 miles and the engine and turbo both performed like new the whole time. That's a long life for a turbocharger.
-John Magnuson
01-05-2003, 01:48 PM
#84
Senior Member
Thread Starter
Join Date: Feb 2002
Location: Frederick MD
Posts: 6,331
Originally Posted by jspecracer7' date='Jan 3 2003, 06:53 AM
20W50 during the summer. 10W30 for the winter....
01-05-2003, 03:14 PM
#85
Senior Member
Join Date: Jan 2003
Location: Oxnard, CA.
Posts: 283
Originally Posted by maxcooper' date='Nov 17 2002, 08:12 AM
Cold-start wear is an issue to consider, so I recommend 10W-30 if you live somewhere cold (at least in the winter). 20W-50 is generally better oil, but it might cost a few ponies to get the extra protection. Mazda may recommend thinner oil to reduce parasitic losses and get better mileage numbers, which seems to be common in the auto industry (and understandably so). If you live somewhere warm, use 20W-50.
One of the Royal Purple guys has been racing rotaries for years, which is nice for us because he uses the oil and would know if it caused any problems. Mobil 1 and Redline are some of the other synth oils that seem to be of good quality and have been used in rotaries by a lot of people.
-Max
One of the Royal Purple guys has been racing rotaries for years, which is nice for us because he uses the oil and would know if it caused any problems. Mobil 1 and Redline are some of the other synth oils that seem to be of good quality and have been used in rotaries by a lot of people.
-Max
First. What does one consider cold? I live in Ventura CA and it dosent really go below 60, 50's is news worthy. so are you saying 20-50(syn) would be best?
Second. Its good info to hear what the guys use in their race vehicles, but for us daily drivers there is still a bit of doubt since those guys change their oil before and after an event. Any body ever talk to some one who deals with alot of daily drivers?
01-06-2003, 11:50 AM
#86
Member
Join Date: Sep 2002
Posts: 38
The viscosity is not a measure of how fast the oil breaks down, just on it's ability to flow. A stock motor should have 10w-30 (winter) to keep the oil flow rate up. Moving more oil should keep the oil temps down since it is not in contact with a hot surface for as long. Also would decrease localized oil hot spots. If you have ported oil passages then maybe go to a higher viscosity. That at least how I've rationalized it but maybe I'm full of crap...
01-06-2003, 04:44 PM
#87
Senior Member
Join Date: Oct 2001
Location: Peoria, AZ
Posts: 10,906
Originally Posted by rotary-tt' date='Jan 6 2003, 12:50 PM
The viscosity is not a measure of how fast the oil breaks down, just on it's ability to flow. A stock motor should have 10w-30 (winter) to keep the oil flow rate up. Moving more oil should keep the oil temps down since it is not in contact with a hot surface for as long. Also would decrease localized oil hot spots. If you have ported oil passages then maybe go to a higher viscosity. That at least how I've rationalized it but maybe I'm full of crap...
So what temps really call for what oil weights? I Don't drive my car in the winter, but its MN, temps will range from 40-100 degrees F. I have always used 10w-30.
01-07-2003, 10:40 AM
#88
Member
Join Date: Sep 2002
Posts: 38
Originally Posted by Fd3BOOST' date='Nov 21 2002, 05:46 AM
Where can I buy Royal Purple?
-Dave
-Dave
http://cgi.ebay.com/ebaymotors/ws/eBayISAP...1874883694&rd=1
The synthetic is better for the turbos which are about the same price as the motor...
Royal Purple is quoted on Mazda's web site (during SevenStock) that synthetic is fine for rotaries...
01-12-2003, 04:22 AM
#90
Member
Join Date: Jan 2002
Posts: 40
MY mechanic had syn in his 81 Gsl for 12 years, uses syn in everthing , he has it in his 94 now for 6+ years with amsoil 2 cycle oil to the oil metering pump. Syn in his turbo charged 1400 cc Kaw Z1 motorcycle for 22 years . I trust his experience, I have it in my 88 vert, and my newer Honda civic.( keeping the miles off the 2dn gen )He has never had an oil related failure.