Like I said - I wouldn't even consider it for my car, it was just something I thought of earlier today and had a little curiosity about.
Group IV oils
- Thread starter Floppie
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Originally Posted By: Ken2
Do we know what base oil Royal Purple uses?
As far as I know and what they have told various people. 100% PAO/Grp IV.
Do we know what base oil Royal Purple uses?
As far as I know and what they have told various people. 100% PAO/Grp IV.
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This is off-topic, but I really like your car Floppie.
Thanks
she's getting there. Got any pics of your Integra floating around?
Once after the Jetta is done with a cycle of auto rx im give Total/Elf 5W40 a try...i think its Group IV.
Originally Posted By: Floppie
The idea is that transmissions have a much lower tolerance for contaminants than engines do, and out of necessity, transmission fluid does a much better job of picking up particles of dirt and carrying them to the filter.
Transmission fluid is rather thin and penetrates well, but I honestly don't think it has better detergent properties than a good synthetic engine oil. I'd like to hear from the experts in regards to just how many detergent additives are in typical ATF.
Here's my thinking:
Yes, transmissions rely on micron-fitted shuttle valves that don't tolerate contaminants. But then transmissions don't have a SOURCE for the kind of contaminants engines do! There's no combustion gas blowing through a transmission the way there is in an engine. Small amounts of transmission oil doesn't get left on cylinder walls, exposed to a combustion cycle, and then washed back into the crankcase like engine oil does. Combustion gases don't carry water, light hydrocarbons, acids, sulfur compounds, and carbon grit into the transmission the way they do into an engine crankcase. There's simply no NEED for transmission oils to have the detergency that engine oils have to have to do their job. The worst that can happen to a transmission is that it gets overheated to the point that the oil itself breaks down and causes deposits, or the clutches get chewed up and plug the filter.
The idea is that transmissions have a much lower tolerance for contaminants than engines do, and out of necessity, transmission fluid does a much better job of picking up particles of dirt and carrying them to the filter.
Transmission fluid is rather thin and penetrates well, but I honestly don't think it has better detergent properties than a good synthetic engine oil. I'd like to hear from the experts in regards to just how many detergent additives are in typical ATF.
Here's my thinking:
Yes, transmissions rely on micron-fitted shuttle valves that don't tolerate contaminants. But then transmissions don't have a SOURCE for the kind of contaminants engines do! There's no combustion gas blowing through a transmission the way there is in an engine. Small amounts of transmission oil doesn't get left on cylinder walls, exposed to a combustion cycle, and then washed back into the crankcase like engine oil does. Combustion gases don't carry water, light hydrocarbons, acids, sulfur compounds, and carbon grit into the transmission the way they do into an engine crankcase. There's simply no NEED for transmission oils to have the detergency that engine oils have to have to do their job. The worst that can happen to a transmission is that it gets overheated to the point that the oil itself breaks down and causes deposits, or the clutches get chewed up and plug the filter.
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Originally Posted By: 440Magnum
Originally Posted By: tig1
In your mind you are trying to get something from oil that you will never find.If your engine has blowby you may need an overhaul. A good synt. like M1 or Amsoil may be able to clean carbon from rings that can help blowby, but no oil will repair a worn engine.
I'm in TOTAL agreement here. The only way any additive/engine enema [censored] will ever help with blow-by is if the rings are severely gummed, and if that's the case they are *probably* also very worn.
If I had an engine that I cared about and it had a blow-by problem, the only thing I would do is run a full synthetic and do short OCIs for a couple of changes and see if it helps. The risk with solvent additives is just too high for me. I've always felt this way and was horrified by all the additive threads on here when I first joined... but now I feel a bit justified by all the "strange noise after XxxxXX clean phase..." and "high consumption after XxxxXX...." and "low oil pressure after XxxxXX..." type threads that are turning up.
NOTHING in my crankcase but OIL!!!
I have to agree. I've always been taught that if you're relying on an additive to solve the problem then you're just putting a bandaid on it. "Ya Slick 50 it once, she'll get addicted and want er' everytime." I've heard this so many times growing up.
Originally Posted By: tig1
In your mind you are trying to get something from oil that you will never find.If your engine has blowby you may need an overhaul. A good synt. like M1 or Amsoil may be able to clean carbon from rings that can help blowby, but no oil will repair a worn engine.
I'm in TOTAL agreement here. The only way any additive/engine enema [censored] will ever help with blow-by is if the rings are severely gummed, and if that's the case they are *probably* also very worn.
If I had an engine that I cared about and it had a blow-by problem, the only thing I would do is run a full synthetic and do short OCIs for a couple of changes and see if it helps. The risk with solvent additives is just too high for me. I've always felt this way and was horrified by all the additive threads on here when I first joined... but now I feel a bit justified by all the "strange noise after XxxxXX clean phase..." and "high consumption after XxxxXX...." and "low oil pressure after XxxxXX..." type threads that are turning up.
NOTHING in my crankcase but OIL!!!
I have to agree. I've always been taught that if you're relying on an additive to solve the problem then you're just putting a bandaid on it. "Ya Slick 50 it once, she'll get addicted and want er' everytime." I've heard this so many times growing up.
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