2024 Lexus RX350 UOA - 1,473mi / PUP 0W-20

[Hawkins12]

This is the third oil change on a brand new 2024 Lexus RX350. We are on Sample #3 per the below. If you are following the journey (which I am sure you aren't), you can see the previous two threads here:
BITOG Post #1
BITOG Post #2
See current results below:

I am still concerned about the Fuel Dilution. It's not nearly as bad as the first; however, this oil change was after a normal 30+ minute drive and waiting for it to cool down to a reasonable level. Nice to see the Silicon working its way down as well as the other items. Surprised to see, what I would consider, significantly less Moly than the prior oil change (note Sample 1 was TGMO whereas Sample 2 was PUP so I know of that difference).

Question for the group -- does anyone know where to find a recent oil analysis of the base PUP 0W-20? I've scoured and couldn't find. I might send out a base oil sample just to have for comparison.

As I've mentioned in prior posts, yes I know many consider this "overkill". My initial goal was to change the oil at around 750 miles, 1500 miles, 3000 miles, and then every 3000 going forward. I am alright with the costs of doing so and the cost of getting these UoA are like an interesting hobby of mine.

Happy to hear any of your thoughts on this. The fuel dilution is a head scratcher---perhaps it's normal for a brand new Turbocharged engine but a report with no Green/Yellowish numbers would be nice for a change (yes I get engine break-in causes much of the yellow)

 

[fantastic]

Just keep doubling up your miles for the next run (Edit: I see your plan is 3k). Fuel doesn't always track with miles & may reach a plateau. These new engines are pushing out more horsepower so fuel is going to be there. Wear trend is coming down nicely as the parts settle in the engine. I bet the RX350 is a nice ride.

 

[Hawkins12]

Just keep doubling up your miles for the next run (Edit: I see your plan is 3k). Fuel doesn't always track with miles & may reach a plateau. These new engines are pushing out more horsepower so fuel is going to be there. Wear trend is coming down nicely as the parts settle in the engine. I bet the RX350 is a nice ride.

Thanks for the message. Loving the ride. And yep, planning on OCI's of every 3k miles here on out. Based on usage thats 2 times a year so seems reasonable to me

 

[himemsys]

Surprised to see, what I would consider, significantly less Moly than the prior oil change (note Sample 1 was TGMO whereas Sample 2 was PUP so I know of that difference).

This is due to carryover. Not all the oil drains out, some carries over into the next fill. So the higher moly in oil change #2 is due to some of the high moly oil from TGMO carrying over. In fact, I think there's still some carryover in the 3rd oil change -- PUP moly levels from what I've seen should be closer to 85ppm and they're still at 111.

Question for the group -- does anyone know where to find a recent oil analysis of the base PUP 0W-20? I've scoured and couldn't find. I might send out a base oil sample just to have for comparison.

I have not found one either. If you do send a sample in, be sure to report it in our Virgin Oil Analysis section so I can see it and add it to the VOA Database.

 

[Hawkins12]

This is due to carryover. Not all the oil drains out, some carries over into the next fill. So the higher moly in oil change #2 is due to some of the high moly oil from TGMO carrying over. In fact, I think there's still some carryover in the 3rd oil change -- PUP moly levels from what I've seen should be closer to 85ppm and they're still at 111.

Thanks. Completely understand carryover. I had always thought PUP Moly was in the 100's but I guess I am wrong on that. I guess the VOA would help settle that

 

[odie]

Here's a V.O.A. for the ULTRA 0w-20 ( S.P.,GF-6A ) . This V.O.A. can be found on YouTube . Enter Pennzoil Ultra Platinum 0w-20 VOA and you'll get this report that was displayed on 3/29/24 .

 

[Hawkins12]

Here's a V.O.A. for the ULTRA 0w-20 ( S.P.,GF-6A ) .

View attachment 224921View attachment 224922View attachment 224923

Thanks a million for this. Did you obtain the results personally? I've been searching far and wide for something like this. How long ago did you obtain? This is great!

 

[odie]

Your welcome . Go to YouTube and enter Pennzoil Ultra Platinum 0w-20 VOA and you'll see the report by the original poster . He has many other oil V.O.A.s to be viewed . Plan to use this for the 2nd generation FIT sometime in the fall .

 

[PBR]

Thank you very much for taking the time to share this information. I have been lurking around here for quite some time but finally joined so that I could post on your thread.

I have a 23 RX350 with the same engine. In case you haven't seen this, here is some good information on the engine: T4 Engine

I did my first oil change at 1,000 miles and I was pleasantly surprised at how easy it was. I replaced the factory fill with M1 AFE 0W-20. I dumped that after 4,000 miles (then at 5,000 miles total) and replaced it with 5W-30 PUP. I have not done a UOA. I plan on 5,000 mile OCI's moving forward. My reasoning with this choice of oil weights comes down to a few things:

1. The engine has a timing chain AND a turbocharger that IMHO benefits from an oil with a higher HTHS rating.
2. I did not know at the time if this engine was a fuel diluter or not- my gut feeling was that it was at least to some extent, thereby benefiting from a slightly thicker oil. The postings of your UOA's so far confirm my gut feelings.
3. I drive the car hard and consider myself in the "severe duty" crowd.
4. PUP 5W-30 is, as far as I know, a "thin" 5W-30 oil. I live in Alaska and had no problems with this oil during the winter months.
5. While 0W-20 is always the "recommended" oil per Lexus, different weight oils are acceptable in parts of the world outside of North America. This information is easy to find with a quick search.

My intention is NOT to turn this into a "Thick vs. Thin" thread. I have no desire to become part of the bashing that I have seen on this site for a long time now. To each their own; do whatever makes you sleep at night. Knowing the folks on this site, let the bashing begin. I have "thick" skin that protects me better than "thin" skin . Hopefully this thread will stay on topic.

 

[FZ1]

This is the third oil change on a brand new 2024 Lexus RX350. We are on Sample #3 per the below. If you are following the journey (which I am sure you aren't), you can see the previous two threads here:
BITOG Post #1
BITOG Post #2
See current results below:
View attachment 224807

I am still concerned about the Fuel Dilution. It's not nearly as bad as the first; however, this oil change was after a normal 30+ minute drive and waiting for it to cool down to a reasonable level. Nice to see the Silicon working its way down as well as the other items. Surprised to see, what I would consider, significantly less Moly than the prior oil change (note Sample 1 was TGMO whereas Sample 2 was PUP so I know of that difference).

Question for the group -- does anyone know where to find a recent oil analysis of the base PUP 0W-20? I've scoured and couldn't find. I might send out a base oil sample just to have for comparison.

As I've mentioned in prior posts, yes I know many consider this "overkill". My initial goal was to change the oil at around 750 miles, 1500 miles, 3000 miles, and then every 3000 going forward. I am alright with the costs of doing so and the cost of getting these UoA are like an interesting hobby of mine.

Happy to hear any of your thoughts on this. The fuel dilution is a head scratcher---perhaps it's normal for a brand new Turbocharged engine but a report with no Green/Yellowish numbers would be nice for a change (yes I get engine break-in causes much of the yellow)

Try PUP 5w-20, slightly thicker/smoother in my 17 Camry than PUP 0w-20, Run the PUP 5w-20 in warm weather; back to PUP 0w-20 when it gets cold. 5k max oci.

 

[Triple_Se7en]

Tweaking Formulations changes come constantly and difference between 80 and 110 is not significant.... nor is it deemed correct, as reading mistakes happen all the time in labs.

Haven't seen 5w20 PUP online recently. I suppose one can get it at places that charge an arm & leg for it.
This latest UOA looks really good. Heavy diluter engines need the thickest 0w20s possible. This oil dropped an entire number in cst@100 in only 1300 miles.

I think Red Line is about the thickest 0w20 I've read about. It usually starts out at just over 9 cst with increased esters. I haven't researched HPL, Amsoil.....etc in 0w20. Both should be easy finds respectively online and one should pay attention to HPL No VIIs formulation. It's built to withstand shearing and fight dilution that attacks wear. I would guess Amsoil Euro works good as a fighter also.

 

[NormanBuntz]

I'd like to know how you like the 2024 model so far, drivetrain and otherwise.

 

[BrendanC]

if wanting to stay with an OTS 0w-20, PUP is hard to beat. i would recommend it or Valvoline EP HM 0w-20. as fantastic said stretch the OCI a bit and see if fuel tracks. i’d be willing to bet as the mileage on the vehicle increases, dilution will decrease.

 

[PBR]

I'd like to know how you like the 2024 model so far, drivetrain and otherwise.

I know that the OP has not responded to your question so I thought that I would chime in. I have a 2023 RX350 which has the same body style, drivetrain etc.

I am REALLY impressed with this vehicle. Very smooth, quiet, and despite it's not so big 4 cylinder engine, it has plenty of power when you ask for it. I routinely find myself going way too fast given the posted speed limit.

I came to the Lexus brand after owning Volvo's for many years. I will never buy another Volvo. I hope that my Lexus will prove to be more reliable than my past Volvo's. Quite frankly it wouldn't take much to achieve this.

 

[goingplacesanddoingstuff]

The more of these I see, the more convinced I am that the 2gr-fks simply needs 30-weight.

Edit: I guess they’re using the 2.4 turbo engine in the RX… 350 now. Gotta love marketing. Still, I’d use a 30.

 

[Patrick0525]

I know that the OP has not responded to your question so I thought that I would chime in. I have a 2023 RX350 which has the same body style, drivetrain etc.

I am REALLY impressed with this vehicle. Very smooth, quiet, and despite it's not so big 4 cylinder engine, it has plenty of power when you ask for it. I routinely find myself going way too fast given the posted speed limit.

I came to the Lexus brand after owning Volvo's for many years. I will never buy another Volvo. I hope that my Lexus will prove to be more reliable than my past Volvo's. Quite frankly it wouldn't take much to achieve this.

I made the switch from a 1998 Volvo S70 to a 2014 Toyota Venza V6 and in 2024 to a 2021 RX350 because of the 2GR-XX engine. Not great on gas but really smooth engine. Structurally the Volvo was robust but overall repair cost was high

 

[PBR]

The more of these I see, the more convinced I am that the 2gr-fks simply needs 30-weight.

Edit: I guess they’re using the 2.4 turbo engine in the RX… 350 now. Gotta love marketing. Still, I’d use a 30.

Yeah they now have the T24A-FTS engine in the RX's. As this engine is still relatively new and long term reliability is yet to be determined, I look forward to the OP's future UOA's.

 

[The Critic]

Yeah they now have the T24A-FTS engine in the RX's. As this engine is still relatively new and long term reliability is yet to be determined, I look forward to the OP's future UOA's.

And contrary to popular belief, it is quite different than the 8AR-FTS used in the older NX200t.

 

[Truck-Guy]

I would switch to good 5w-30 and a better filter. OEM Toyota filters are known to be pretty bad filtration ratings. They lean to good flow but allow a lot of particulates through. A high end synthetic filter will outperform the cheap ones any day of the week. Purolator Boss, Fram Endurance or Synthetic, Royal Purple, Amsoil.

 

[G80_Rob]

I would switch to good 5w-30 and a better filter. OEM Toyota filters are known to be pretty bad filtration ratings. They lean to good flow but allow a lot of particulates through. A high end synthetic filter will outperform the cheap ones any day of the week. Purolator Boss, Fram Endurance or Synthetic, Royal Purple, Amsoil.

Thanks for the tip I just got a 2019 RX 350 with 76k miles, did a Kirkland Synthetic 0w20 oil change since I just got it and was the cheapest I could find with a toyota filer from amazon.