Non-Synthetic / Synthetic Arguments?
09-17-07 | 12:12 AM
#1
Thread Starter
Rotary Enthusiast
Joined: Jul 2003
Posts: 823
Likes: 0
From: Toronto
Non-Synthetic / Synthetic Arguments?
Just wanted to know the exact "UP to Date" arguments on wheather Synthetic is good for your engine vs Non Synthetic?
I understand the the owners manual states only non-synthetic for rx7 rotary, because the system draws oil into the engine from the oil pan the oil must burn clean. I understand that older synthetics did not burn as well as new synthetics. But I was just wondering if this was the only reason why Mazda insisted on puting Non Synthetic in?
Are there other arguments in favor of using non synthetic?
I understand the the owners manual states only non-synthetic for rx7 rotary, because the system draws oil into the engine from the oil pan the oil must burn clean. I understand that older synthetics did not burn as well as new synthetics. But I was just wondering if this was the only reason why Mazda insisted on puting Non Synthetic in?
Are there other arguments in favor of using non synthetic?
09-17-07 | 12:39 AM
#2
Senior Member
Joined: Sep 2003
Posts: 342
Likes: 1
From: Boise, Idaho
Oil injection is the key here, yes synthetics are not a good choice unless they are made to burn like TC-W3 2 cycle. I would not rely on moble 1 or any other sythetic oil as a oil injection...you don't know what they can do. If you don't premix stay with regular oil.
I use TC-w3 in my gas as premix, and full synthetic in everything else.
I use TC-w3 in my gas as premix, and full synthetic in everything else.
Sigh...IBTL...
09-17-07 | 07:37 AM
#4
What's your point ?
Joined: Feb 2001
Posts: 3,573
Likes: 0
From: Gainesville, Fla.
Just wanted to know the exact "UP to Date" arguments on wheather Synthetic is good for your engine vs Non Synthetic?
I understand the the owners manual states only non-synthetic for rx7 rotary, because the system draws oil into the engine from the oil pan the oil must burn clean. I understand that older synthetics did not burn as well as new synthetics. But I was just wondering if this was the only reason why Mazda insisted on puting Non Synthetic in?
Are there other arguments in favor of using non synthetic?
I understand the the owners manual states only non-synthetic for rx7 rotary, because the system draws oil into the engine from the oil pan the oil must burn clean. I understand that older synthetics did not burn as well as new synthetics. But I was just wondering if this was the only reason why Mazda insisted on puting Non Synthetic in?
Are there other arguments in favor of using non synthetic?
09-17-07 | 10:18 AM
#5
09-17-07 | 10:24 AM
#6
Joined: Mar 2001
Posts: 30,580
Likes: 567
From: FL-->NJ/NYC again!
I use Idemitsu in the engine and for premix, have for a few years now.
http://www.rx7.com/store/rx7/fdengine_maintenance.html
"Never heard of Idemitsu oil? Don’t be too surprised. After 90 years, Idemitsu has just made itself available to the American public. Here are a few things you probably didn’t know:
• Largest Japanese oil manufacturer in the world.
• Exclusive supplier to all Japanese OEMs.
• Largest producer of custom blended oils.
• Supplier of custom competition blended oils for Mazda’s racing efforts.
What does this mean to us Rotarians? Now we can use the oils that is based on technology that helped Mazda win the 24 hours of LeMans. Nothing speaks better for oil’s effectiveness than the ability to survive that extreme punishment. We’ve tested this oil in both of our race cars. Our world famous RX7.COM “Stars and Stripes” championship winning car puts severe stresses on the engine bearings. We’ve never had any problems whatsoever with Idemitsu oils. Being turbocharged and nitrous-fed, there is no harder test for an oil. In addition, Ken Scheepers has relied on Idemitsu oils to keep his RX7.COM sponsored All-Motor engine together. Now that you know the name, buy a few bottles, your engine will thank you."
http://www.rx7.com/store/rx7/fdengine_maintenance.html
"Never heard of Idemitsu oil? Don’t be too surprised. After 90 years, Idemitsu has just made itself available to the American public. Here are a few things you probably didn’t know:
• Largest Japanese oil manufacturer in the world.
• Exclusive supplier to all Japanese OEMs.
• Largest producer of custom blended oils.
• Supplier of custom competition blended oils for Mazda’s racing efforts.
What does this mean to us Rotarians? Now we can use the oils that is based on technology that helped Mazda win the 24 hours of LeMans. Nothing speaks better for oil’s effectiveness than the ability to survive that extreme punishment. We’ve tested this oil in both of our race cars. Our world famous RX7.COM “Stars and Stripes” championship winning car puts severe stresses on the engine bearings. We’ve never had any problems whatsoever with Idemitsu oils. Being turbocharged and nitrous-fed, there is no harder test for an oil. In addition, Ken Scheepers has relied on Idemitsu oils to keep his RX7.COM sponsored All-Motor engine together. Now that you know the name, buy a few bottles, your engine will thank you."
09-17-07 | 12:31 PM
#7
2turbos
Joined: Apr 2004
Posts: 190
Likes: 0
From: Speedway, Indiana
I use Idemitzu too.
It was stated earlier in this thread that synthetic oil doesn't burn and that dino oil does in the combustion chamber. Actually, no lubricant burns in the combustion chamber. If it did, it would have little if any lubricating properties!
A rotary is a lot like a 2 stroke. Oil doesn't "Burn" in those either and isn't supposed to. It's just supposed to lubicate.
In fact, at higher ratios of oil to fuel you have to compensate for leanout of fuel as oil displaces it with your jetting or fuel mapping.
Don't expect oil to burn in the combustion chamber, either synthetic or conventional.
It was stated earlier in this thread that synthetic oil doesn't burn and that dino oil does in the combustion chamber. Actually, no lubricant burns in the combustion chamber. If it did, it would have little if any lubricating properties!
A rotary is a lot like a 2 stroke. Oil doesn't "Burn" in those either and isn't supposed to. It's just supposed to lubicate.
In fact, at higher ratios of oil to fuel you have to compensate for leanout of fuel as oil displaces it with your jetting or fuel mapping.
Don't expect oil to burn in the combustion chamber, either synthetic or conventional.
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09-17-07 | 01:02 PM
#8
2/4 wheel cornering fiend
Joined: Nov 2002
Posts: 3,090
Likes: 3
From: Pasadena, CA
Actually, oil does burn in the combustion chamber, just not all of it. If the oil didn't burn, then the FD's catalytic converter life would be very short. Yes, the premixed (or injected) oil is intended to condense on the housing walls and provide lubrication (in the rotary's case), but many of the diluted oil droplets remain suspended and inevitably get consumed (and then converted to other molecular compounds) by the heat of combustion.
