Anyone see API SQ?
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- Feb 3, 2025
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Yep. QSFS 5W-30 is all SQ at several Walmarts I frequent.
Castrol Edge EP at Wally.
It seem as though "P" GF-6A/6B had just arrived.
I had some Havoline conventional SQ not long ago
Decided to pour 10W-40 conventional oil in my Xterra this summer - its always run conventional or semi syn. Currently has Havoline 5W-30 in it.
Showed up in new box with SQ rating. Found that interesting - unsure why I guess. Either way, hope its good stuff. It was $23 for 6 quarts. Walmart delivered.
Showed up in new box with SQ rating. Found that interesting - unsure why I guess. Either way, hope its good stuff. It was $23 for 6 quarts. Walmart delivered.
Brief overview about API SQ for those not in the know {quote from Google }
Engine technology has advanced rapidly, leading to different lubrication needs than in the past. The API SQ standard, launched on March 31, 2025, is the latest specification, succeeding API SP.
API SQ offers several advantages over API SP for modern engines:
Engine technology has advanced rapidly, leading to different lubrication needs than in the past. The API SQ standard, launched on March 31, 2025, is the latest specification, succeeding API SP.
API SQ offers several advantages over API SP for modern engines:
- LSPI Protection: API SQ addresses Low-Speed Pre-Ignition (LSPI), an issue that can damage turbocharged engines.
- Timing Chain Wear Control: API SQ oils use optimized additives to reduce timing chain wear and extend engine life.
- Ultra-Low Viscosity Support: API SQ supports SAE 0W-8 and SAE 0W-12 grades, which improve fuel efficiency.
- Emission Compliance: The standard limits sulfated ash content to 0.9% by mass, which helps protect Gasoline Particulate Filters (GPFs) and reduce particulate emissions.
- Engine Testing: API SQ includes updated and more rigorous engine tests for better performance assurance.
This is not directed at you, but in general. How can API SQ improve on SP’s LSPI protection in the real world? Even on this massive board, with people laser-focused on everything oil-related, and also willing to blame the oil in many instances where it was not even a factor, I don’t think I’ve seen one single person who knows of an LSPI event that has destroyed an engine. Not even their neighbor’s cousin’s auntie’s grandson’s baby mama…
About the only way it’s possible to induce the conditions is to have a small turbo engine that’s ingesting quantities of oil vapor into the combustion chamber, lock the trans in manual mode (if it even has one), put it in waaay too high of a gear (sub-2k RPM), and then tow something up thru the Eisenhower Tunnel with the pedal on the floor. I’d love to see manufacturer-accepted or even SAE data that shows the failure rates due to LSPI vs the total population of engines they say are vulnerable to it. I bet there’s not only quite a few zeros between the decimal and first number, but also that the majority of those engines were likely neglected as well prior to their demise.
BTW, H/K engine bombs and YT videos don’t count since they’re not verifiable
4WD
$50 site donor 2025
Yep, myself and others owned TDI vehicles before we even had SN Plus … don’t get me wrong - they all brought in a better balance of calcium/magnesium - things to quench - but there is likely more to the story on failure events …This is not directed at you, but in general. How can API SQ improve on SP’s LSPI protection in the real world? Even on this massive board, with people laser-focused on everything oil-related, and also willing to blame the oil in many instances where it was not even a factor, I don’t think I’ve seen one single person who knows of an LSPI event that has destroyed an engine. Not even their neighbor’s cousin’s auntie’s grandson’s baby mama…
About the only way it’s possible to induce the conditions is to have a small turbo engine that’s ingesting quantities of oil vapor into the combustion chamber, lock the trans in manual mode (if it even has one), put it in waaay too high of a gear (sub-2k RPM), and then tow something up thru the Eisenhower Tunnel with the pedal on the floor. I’d love to see manufacturer-accepted or even SAE data that shows the failure rates due to LSPI vs the total population of engines they say are vulnerable to it. I bet there’s not only quite a few zeros between the decimal and first number, but also that the majority of those engines were likely neglected as well prior to their demise.
BTW, H/K engine bombs and YT videos don’t count since they’re not verifiable
It is more about how severe than how often LSPI chunks a rod …
(and what did the “black box” say?) …
This is not directed at you, but in general. How can API SQ improve on SP’s LSPI protection in the real world? Even on this massive board, with people laser-focused on everything oil-related, and also willing to blame the oil in many instances where it was not even a factor, I don’t think I’ve seen one single person who knows of an LSPI event that has destroyed an engine. Not even their neighbor’s cousin’s auntie’s grandson’s baby mama…
About the only way it’s possible to induce the conditions is to have a small turbo engine that’s ingesting quantities of oil vapor into the combustion chamber, lock the trans in manual mode (if it even has one), put it in waaay too high of a gear (sub-2k RPM), and then tow something up thru the Eisenhower Tunnel with the pedal on the floor. I’d love to see manufacturer-accepted or even SAE data that shows the failure rates due to LSPI vs the total population of engines they say are vulnerable to it. I bet there’s not only quite a few zeros between the decimal and first number, but also that the majority of those engines were likely neglected as well prior to their demise.
BTW, H/K engine bombs and YT videos don’t count since they’re not verifiable
As I understand it, Toyota found that LSPI, caused by oil, was damaging engines, which started the oil evolution to control the event. I don't think they made this up. And Toyota isn't big on turbos, at least in the US market. Anyway, I'm curious what chemical changes are in SQ. Even more Calcium reduction? And what additive to reduce cam chain wear? Moly?
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