2024 BRZ; Amsoil or other lube?

*this doesn't prevent the manufacturer from requiring a certain specification/approval/oil grade etc. They just can't make the warranty contingent on a particular brand or using the dealer for it. It's a nuance that is v. important here and one that many get wrong.
Actually that’s also incorrect. The damage has to be caused by the product. If not won’t fly with the FTC.
 
Actually that’s also incorrect. The damage has to be caused by the product. If not won’t fly with the FTC.
Yes, they have to blame that product that you used first, that wasn't listed as acceptable to use and then show that it caused the damage. This is clearly not always going to go the way folks want. Folks here think they can use whatever they want and if they have an issue scream MM ACT! It's not that simple but yes, you may win if it gets that far. Much less hassle to stick with the manufacturer requires or recommends if you are a low risk person. MMA doesn't give you carte blanche to use whatever you want in your car and maintain the factory warranty. Dealer is a gate here in this process and your PITA factor can be quite high trying to get your MMA BRO! way with the manufacturer.
 
I've owned my Subaru 2024 BRZ (Canada) for one year, and it was my plan to run Amsoil 5w20 SS in it for the first season which I did. It is a 3 -season car only, put away in storage during winter. Very low use and miles, only 3,300 kms in one year of ownership. I dumped the factory fluid at 400 miles (600 kms) and ran the Amsoil fluid for the rest of the season. I have fresh Amsoil 5w20 in it now ahead of winter storage. I was not able to collect a used oil sample, it was my intention but I dumped it before I could get a sample. My car is very lightly driven, only casual street use, as a pleasure use vehicle.

My dealer thinks that I should be in there every 6 months for an oil change based on the warranty, but I am no where near the mileage recommendation. It was my plan to get a dealer oil change once per year just to keep them as friends in case a warranty issue arose. I think Subaru uses Idemitsu in their oil supply system.

As the car is in winter storage I've been thinking that I might prefer to just run a good quality over-the-counter motor oil that I can easily find at my local supply store rather than going through the Amsoil ordering/shipping process. I am also wondering if the dealer would make a fuss about Amsoil should there be a warranty claim needed. I do have an extended warranty. Amsoil is a bit expensive but I'm only doing one fluid change a year so price isn't a big factor. With the car only being used in 3-season weather I could run 5w30, I have avoided the 0w oils as they all have higher NOACK Volatility numbers, so I ran 5w20 instead of 0w20 in the past 12 months.

If I go to an over-the-counter oil I want it to have a low NOACK volatility number, I think that is helpful with a direct injected motor (though my engine has dual injection systems) . I was very pleased with the Amsoil 5w20 NOACK numbers. I would like any new oil to be a true Group 4 oil, not a Group 3. I also like to see a decent dose of Moly in my oils, complimented with some Boron. I'm open to 5w20 or 5w30. I'd really like a 0W30 motor oil but the NOACK volatility numbers all see higher on that viscosity compared to the 5w variants. A shear stable oil is also important, I've heard people report that the chain operation and design of this motor shears oil at an increased rate. The motor on this car was revamped in 2020, I believe it is rated for SN plus or higher, but an SP or SQ would be a plus for timing chain wear protection.

I think the only option in my region that might satisfy my requirements is Pennzoil Ultra Platinum, and perhaps one of the Mobil 1 formulas, I was very close to trying Liqui Moly for the 2026 season but I held back on buying it thus far, I think it is a group 3 oil. I might be able to locate Idemitsu Oil from local supply stores, but I don't know much about that oil. Is there any other oil that I might be missing on the list of potential oils I can run for the next season that checks all of the boxes ?

Thanks for reading and any suggestions.
Motul makes a couple for it. They are a French company. I don't know if you can get it in Canada. Mobil 1 ESP 0W-20 or Pennzoil Ultra Platinum also good. The Amsoil would probably protect your rings the best from deposits, however. Amsoil Noack numbers are great on their Signature Series.
https://www.motul.com/en-US/lubricants/recommendations/148770
 
Perhaps consider Schaeffer's engine oil its some good stuff..

That is a product I always wanted to try but never did. I kind of forgot about it , worth me looking into though. I wish it was available from more sellers/distributors ?
 
agreed. if it's driven only 3k easy miles a year on AMSOIL Signature Series, I think we should debate 2 year OCI, not one.

I will always do an oil change before winter storage, it is just something I prefer to do when I put the car to sleep. That's how the oil has so few miles on it, the car sleeps for 5 months and gets driven lightly for 7 months max. I just would not do 2 years even if it was fine to do it.
 
Amsoil will be good for 12 months easily and keep your rings clean

The Amsoil product does check most of my boxes for sure - currently running the 5w20 SS. No hesitation about the product at all. I'm still not 100 percent about warranty though, but I know there would never be an oil related failure with it and I would have very little to worry about.
 
The Amsoil product does check most of my boxes for sure - currently running the 5w20 SS. No hesitation about the product at all. I'm still not 100 percent about warranty though, but I know there would never be an oil related failure with it and I would have very little to worry about.
What does your written warranty actually say?
 
What does your written warranty actually say?
I don't know about any "fine print" but basically I need to change the oil at recommended intervals for an oil in the recommended viscosity range for the driving conditions I do, an oil API SN plus rated as this motor was developed in 2022
 
I don't know about any "fine print" but basically I need to change the oil at recommended intervals for an oil in the recommended viscosity range for the driving conditions I do, an oil API SN plus rated as this motor was developed in 2022
There isn’t any fine print really. Just what the book says.

And it really says all of that you posted else the warranty is void? That would be a new one if it did.
 
Well, then it looks like they want you to change your oil every six months. My sis-in-law drove her Ford C-Max about 50 miles per month & the dealer still brought her in every six months for service. Manual says use 0w-20, they used 5w-20. Northern CA. She got the extended warranty & service contract, so I assume that was all paid for.

Will they void your warranty? I wouldn't want to test it. Usually if you show receipts the warranty will remain intact. So this dealer is going to keep reminding you to bring it in every 6 months? I'd advise reading the warranty, yes all the fine print too. As far as bringing in your own oil, I knew a tech at a dealership who would just use whatever came out of the hose to refill after an oil change. I don't know if he kept the oil the customer brought in or threw it away, but that customer got the Kendall that was in their tank.
 
Time for a big dollop of reality ...

What you want is, well, not a necessity. I say this because you stated that it won't be driven hard. It's only a 3 season car. And if your previous mileage is any indication, it won't see much use (equivalent to 2k miles a year). You can want what you want, and there's nothing wrong with that.

But given your stated conditions, just about any API SP lube (no matter what base stock) is going to do just fine and your engine will not suffer in the least. Your engine won't know the difference between Supertech lube and Amsoil, or anything else for that matter, given the way you intend to use the car. Seriously, you won't see one iota of difference in wear data; statistically just won't happen.


BTW - there are some EXCELLENT group III lubes out there. Don't be one of those base-stock bigots.
The vast majority of sumps out there are filled with Group III oils, and nobody gives it a second thought, or even knows what the terminology means.
 
By all rights, the Formulators and additive guys are doing some incredible things with regular ,say, with Group 3 base oils that really did not exist not too many years ago, the SQ G-7 to note are above the past and are great oils , lots of hard work and testing went goes into and still is occurring on these oils to this day.
 
*this doesn't prevent the manufacturer from requiring a certain specification/approval/oil grade etc. They just can't make the warranty contingent on a particular brand or using the dealer for it. It's a nuance that is v. important here and one that many get wrong.
It’s still not a requirement. The only requirement for warranty is an oil that doesn’t cause damage.
 
I will add Subaru’s are prone to piston deposits. So cheaper oils aren’t a good fit. I own two Subarus and maintain five total. The OTS oils I recommend are Valvoline Restore and Protect and Mobil 1 ESP 0W-30. These will keep those pistons clean and avoid oil consumption problems. AMSOIL Signature Series will also accomplish this of course.
Agreed. OP, listen to @GW. here. She developed oil burning with high quality synthetics at 5k OCIs.

I think your options are Euro oil (Mobil 1 Full Synthetic 0W-40 or Mobil 1 ESP 0W-30), Valvoline Restore and Protect 5W-30, or Amsoil. I'd personally run their 10W-30. You could change once a year that way.

You do not need to get your oil changed once a year to "make friends" at the service department so they'll help you. They will honor your warranty regardless. I also wouldn't take their word about the warranty whatsoever. They are not the ones who have the final say on that. Service advisors are notoriously poorly educated on this stuff.

would like to use a 0w30 oil visc. but most 5w's I see appear to have lower NOACK
Why do you want a 0W-xx when you're not running it in winter? You could run 10W-30 easily.

Time for a big dollop of reality ...
I disagree with this "big dollop." Subaru engines burn oil easily. I think they're one of the best examples of engines that won't do well on any "API SP lube."

do you think NOACK volatility numbers are worth worrying about ?
Btw it's "Noack," eponymously named after Dr. Noack who created the test.
 
Back
Top Bottom