I put Napa synthetic 0w-20 (the old version with sodium) in my stepmoms Mazda CX-5. Should I fret or just try to not keep it on a constant diet of it? Most of my oils are pre dexos gen 2. In my stash is Quaker state, magnatec, milesyn, idemitsu are these okay?
Sodium in gdi engines
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wemay
Site Donor 2023
I wouldn't. LSPI occurs in very low numbers overall and is virtually nonexistent in naturally aspirated engines. Drive on and enjoy that Mazda.
I would not worry. Just motor on.
I wouldn't worry. Enjoy
Anyone who uses sodium in a di turbo is a darwin award winner. According to infinium, the presence of sodium doubles the number of lspi events.
The next test assessed a formulation containing a mixture of 0.159% calcium and 0.042% sodium. Here the mixture almost doubled the LSPI activity when compared to the effect of calcium alone. This implies that sodium is a more aggressive LSPI promoter in the presence of calcium. see link below, obviously some of you people shouldn't be handing out advice.
link
The next test assessed a formulation containing a mixture of 0.159% calcium and 0.042% sodium. Here the mixture almost doubled the LSPI activity when compared to the effect of calcium alone. This implies that sodium is a more aggressive LSPI promoter in the presence of calcium. see link below, obviously some of you people shouldn't be handing out advice.
link
wemay
Site Donor 2023
Obviously you need to reread that study, and the original post before making condescending comments.
The study used the GM 2.0L Ecotec LHUÂ which is a turbocharged gdi engine.
http://gmauthority.com/blog/gm/gm-engines/lhu/
The OP has a 2.5 naturally aspirated gdi Mazda.
Yes, that makes a difference.
The study used the GM 2.0L Ecotec LHUÂ which is a turbocharged gdi engine.
http://gmauthority.com/blog/gm/gm-engines/lhu/
The OP has a 2.5 naturally aspirated gdi Mazda.
Yes, that makes a difference.
I realize this, I said anyone worried about lspi second post, not anyone just using a di turbo. 500ppm sodium, you are asking for trouble. That is not an insignificant amount of sodium. LSPI does happen in those engines, OBVIOUSLY sodium is an aggressive LSPI promoter.
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Rest easy, it's a good detergent and won't hurt a non turbo gdi.
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Originally Posted by wemay
Obviously you need to reread that study, and the original post before making condescending comments.
The study used the GM 2.0L Ecotec LHUÂ which is a turbocharged gdi engine.
http://gmauthority.com/blog/gm/gm-engines/lhu/
The OP has a 2.5 naturally aspirated gdi Mazda.
Yes, that makes a difference.
Good point Wemay. I dont have LSPI so I'd gladly use a oil with sodium. Valvoline used it without problems so whats the big deal
Obviously you need to reread that study, and the original post before making condescending comments.
The study used the GM 2.0L Ecotec LHUÂ which is a turbocharged gdi engine.
http://gmauthority.com/blog/gm/gm-engines/lhu/
The OP has a 2.5 naturally aspirated gdi Mazda.
Yes, that makes a difference.
Good point Wemay. I dont have LSPI so I'd gladly use a oil with sodium. Valvoline used it without problems so whats the big deal
I think this thread needs less feelings and more facts. GDI's do get lspi as well, and sodium is a precursor. Funny, sounds like the OP already knows this, so he knows the answer to his own question but he really wants the "ok" to run a super high sodium oil. Looks like he came to the right place, hopefully he don't pay for it, LSPI can kill and engine.
I'll just add one FACT and move along. If you want to mitigate your risk, lower your OCI, because they have found that the longer the interval the greater the risk of lspi. So if you are gonna use a high calcium super high sodium oil, going with a short interval would be a way to mitigate your risk, good day Burla.
Valvoline has generally produced the best UOAs of any oil on this site over the years. I attributed that to their Lubrizol add pack...which always showed sodium in a UOA/VOA. Ive come to realize that the oil makers change formulations much like normal people change their socks.
It was once said on this very forum that you should stick with a name brand as you at least know what you're getting...vs a house brand that changes vendors all the time.
My thoughts...you never know what formulation you are getting any more. Look for the specs and buy on price.
It was once said on this very forum that you should stick with a name brand as you at least know what you're getting...vs a house brand that changes vendors all the time.
My thoughts...you never know what formulation you are getting any more. Look for the specs and buy on price.
Originally Posted by Doublehaul
Valvoline has generally produced the best UOAs of any oil on this site over the years. I attributed that to their Lubrizol add pack...which always showed sodium in a UOA/VOA. Ive come to realize that the oil makers change formulations much like normal people change their socks.
It was once said on this very forum that you should stick with a name brand as you at least know what you're getting...vs a house brand that changes vendors all the time.
My thoughts...you never know what formulation you are getting any more. Look for the specs and buy on price.
Real good info sir
Valvoline has generally produced the best UOAs of any oil on this site over the years. I attributed that to their Lubrizol add pack...which always showed sodium in a UOA/VOA. Ive come to realize that the oil makers change formulations much like normal people change their socks.
It was once said on this very forum that you should stick with a name brand as you at least know what you're getting...vs a house brand that changes vendors all the time.
My thoughts...you never know what formulation you are getting any more. Look for the specs and buy on price.
Real good info sir
Valvoline and Castrol both moved away from sodium once the info was out on LSPI. OP has old stock though...
I don't believe Valvoline's consistently awesome UOA's are related to sodium, but whatever it is they consistently use as an additive that does not show up in a 30 dollar UOA. Super secret juice ha ha. Valvoline always looks bland and uninspiring in UOA/VOA's, yet the results for "wear numbers" are generally fantastic. This has been consistent for many years.
As for the OP I don't think one OCI is going to make the sky fall, but I'd not repeat. That Mazda may not be turbo, but if it has "Skyactiv" the compression levels are very high. Isn't that exactly what a turbo does?
I don't believe Valvoline's consistently awesome UOA's are related to sodium, but whatever it is they consistently use as an additive that does not show up in a 30 dollar UOA. Super secret juice ha ha. Valvoline always looks bland and uninspiring in UOA/VOA's, yet the results for "wear numbers" are generally fantastic. This has been consistent for many years.
As for the OP I don't think one OCI is going to make the sky fall, but I'd not repeat. That Mazda may not be turbo, but if it has "Skyactiv" the compression levels are very high. Isn't that exactly what a turbo does?
The sky active engine can reach 14-1. However, compared to 20-1 effective compression in an eco boost it is not the same severity In the amount of fuel that can be mixed in the combustion chamber. And different than a turbo like all naturally aspirated GDI designs, the Mazda produces its torque at higher rpms.
As an aside I think Mazda is onto something with their technology and exhaust manifolds that control charge temperature through better flow. Very old school fundamental technology being optimized to make GDI get more efficiency out of fuel.
Originally Posted by KCJeep
Valvoline and Castrol both moved away from sodium once the info was out on LSPI. OP has old stock though...
I don't believe Valvoline's consistently awesome UOA's are related to sodium, but whatever it is they consistently use as an additive that does not show up in a 30 dollar UOA. Super secret juice ha ha. Valvoline always looks bland and uninspiring in UOA/VOA's, yet the results for "wear numbers" are generally fantastic. This has been consistent for many years.
As for the OP I don't think one OCI is going to make the sky fall, but I'd not repeat. That Mazda may not be turbo, but if it has "Skyactiv" the compression levels are very high. Isn't that exactly what a turbo does?
As an aside I think Mazda is onto something with their technology and exhaust manifolds that control charge temperature through better flow. Very old school fundamental technology being optimized to make GDI get more efficiency out of fuel.
Originally Posted by KCJeep
Valvoline and Castrol both moved away from sodium once the info was out on LSPI. OP has old stock though...
I don't believe Valvoline's consistently awesome UOA's are related to sodium, but whatever it is they consistently use as an additive that does not show up in a 30 dollar UOA. Super secret juice ha ha. Valvoline always looks bland and uninspiring in UOA/VOA's, yet the results for "wear numbers" are generally fantastic. This has been consistent for many years.
As for the OP I don't think one OCI is going to make the sky fall, but I'd not repeat. That Mazda may not be turbo, but if it has "Skyactiv" the compression levels are very high. Isn't that exactly what a turbo does?
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