Will 2024 BRZ Benefit from SQ ?

[kschachn]

Use it. If you are worried about LSPI events, run premium high octane fuel.
Also, DO NOT use the Eco mode.

Octane rating has nothing to do with LSPI. There was one rather rogue study that tried to correlate gasoline additives but it was only a guess and I've not seen another. LSPI is related to engine design and oil composition.

 

[kschachn]

I ordered a supply of Liqui Moly motor oil , it was delivered to me today. I expected an SQ rating which I seen on the Liqui Moly website, but the one shipped to me is SP. I checked my local NAPA supply and the one they offer is SP rated.

My car is a 2024 Subaru BRZ, it is is naturally aspirated , but high compression - 2.4L motor. I don't think LSPI is is a big issue on this car, it is direct injected and port injected. It uses timing chains. I have the option of sending it back, but I don't know if my car would benefit from an SQ version over SP ? , if it would make much difference. This is for a 5w30 Moly Gen formula.

Thanks for any replies on this and thanks for reading.

I' be more interested in the Euro approvals the oil has way before I'd care about an API license.

 

[BMWTurboDzl]

most of the information I see with LSPI is related to turbocharged direct injected higher compression motors, the BRZ is NA but it is higher compression, it also has port injection to compliment the direct injection. Perhaps less susceptible to LSPI as a result ?

Yes because some domestic automakers back in the 2010's attempted to get their gas engines to behave like a diesel.

 

[Hermann]

Thank you for the reply, looking around at some sites I still see SN versions being sold, so I guess SP is good

Want some SL Castrol?

 

[edyvw]

Folks, no turbo=no LSPI problem.

 

[daniel327]

I'd send it back and order some Valvoline oil instead.

 

[zeroptzero]

Want some SL Castrol?

I suppose it might be of use to someone, not likely for me.

 

[zeroptzero]

Folks, no turbo=no LSPI problem.

That was always my understanding , but some references to LSPI mention high compression DI engines. I am not sure if they are saying turbocharged high-compression DI engines, or if they are saying turbocharged DI engines and high compression DI engines individually ?

 

[SC Maintenance]

So I was under the belief that SN+, SP and SQ were all the same for the ILSAC6A, ie anything 0W-20 or thicker?

I thought all the new / LSPI specs were 0W-16 / 0W-8 things?

Am I wrong?

 

[edyvw]

That was always my understanding , but some references to LSPI mention high compression engines. I am not sure if they are saying turbocharged high-compression engines, or if they are saying turbocharged engines and high compression engines individually.

There are engines with higher compression. Again, the problem is a boost at very low rpms.
In that vehicle and engine, I would go Mobil 1 ESP 0W30 or Castrol Edge 0W30. Both API SL.

 

[altaylar]

Not all LM oil has Molygen in it or a meaningful dose of it.

exactly. molygen leverages tungsten as the friction modifier if memory serves me correct

 

[Japanese]

Use it. If you are worried about LSPI events, run premium high octane fuel.
Also, DO NOT use the Eco mode.

API SP came out in May 2020 and it's designed to handle LSPI, along with timing chain wear and sludge deposits.

https://www.api.org/products-and-se...ies-and-classifications/latest-oil-categories

The new standards specify more stringent engine oil performance requirements for spark-ignited internal combustion engines. The three include seven new tests, including a chain wear test and a new test for very low-viscosity engine oils. The standards also include a test designed to protect against a phenomenon experienced by some gasoline engines known low speed pre-ignition (LSPI).

LSPI is an event observed only in turbo GDI engines, not N/A engines like the BRZ/GR86.

 

[Japanese]

That was always my understanding , but some references to LSPI mention high compression DI engines.

Your engine has both DI and port injection. The engine came out in 2013 or 2014 and back then API SN (2010) was the latest standard.

 

[4wd]

There are engines with higher compression. Again, the problem is a boost at very low rpms.
In that vehicle and engine, I would go Mobil 1 ESP 0W30 or Castrol Edge 0W30. Both API SL.

That should work

 

[zeroptzero]

API SP came out in May 2020 and it's designed to handle LSPI, along with timing chain wear and sludge deposits.

https://www.api.org/products-and-se...ies-and-classifications/latest-oil-categories


LSPI is an event observed only in turbo GDI engines, not N/A engines like the BRZ/GR86.

Thanks for confirming that, it addresses all of my concerns , so no reason for me to change anything at this time, thank you, and thanks to everyone who replied in a similar way. It is way to easy to "over-think" specs and details it seems, certainly for people like myself.

 

[zeroptzero]

Your engine has both DI and port injection. The engine came out in 2013 or 2014 and back then API SN (2010) was the latest standard.

Essentially yes, my car's engine was redesigned in 2022 with the displacement increase to 2.4 litres , similar but different to the previous gen.

 

[kschachn]

So in answer to your posted question of "Will 2024 BRZ Benefit from SQ", perhaps but not for LSPI concerns.

 

[edyvw]

That should work

View attachment 319552

View attachment 319553

Yes. 0W30 passes all test requirements. But bcs. phosphorus levels, officially it is SL.

 

[VolkswagenFox21]

Here's what Subaru in Japan thinks you should run in any of their cars if you want higher protection and aren't focused on miniscule fuel savings. Get a 30 or 40 weight Euro oil in there and you're done. No need to worry about API ratings.

 

[altaylar]

Yes. 0W30 passes all test requirements. But bcs. phosphorus levels, officially it is SL.

and because low volatility, that phosphorus level is still fine.

literally "too good to be SQ"

edit: I just got a new phone, and it's autocorrect is messing this up