Well, I just called Lexus service about miles vs time of oil change since my 2020 RX had 6800 miles for 13 months. They said to bring it in since it's been 1yr.
I suggest using Lexus/Toyota recommended parts, and service during the warranty period. If you have issues during that period and did not follow the manual requirements they could challenge your warranty coverage. I'm sure any quality recommended spec oil / filter, and other aftermarket parts will work just fine possibly better. I've read several posts on many forums including this one that manufacture warranty claims were denied for things that could be difficult to prove them wrong.
imo...

 

Although my wife hardly drives more than 10 - 12k miles a year, the AMSOIL Signature Series says on the bottle it is good for 25k miles / 1 yr which ever comes first.
I go to the corner Mechanic with AMSOIL & Filter ($$$) once a year.

Now I am buying a 2018 RX350,with 28k miles from CARVANA, trading in our 2010 RX 350, with 92k miles using AMSOIL & am looking into of buying their extended warranty, CARVANA Care, It remains to be seen how this Carvana Care & the Car will pan out.

For the 2018 RX 350, I wonder if anybody knows If the oil is changed at the near by Toyota Dealer, will it be Kosher for the Warranty to come through.

Thanks

 

The oil and filter for the 2GR 350 engine are the same for the Toyota Highlander so yes, they can do the oil change. If you have documentary evidence that the oil and filter were changed on schedule, there will be no basis for challenging a warranty claim for a lubrication failure. The warranty doesn't say the oil change has to be done by Lexus.

 

Hello all,
After purchasing my new RX350, I was looking into getting a supra - however i noticed in the supra forums people are switching from the default 0w20 oil to a more thicker oil because the default oil was causing excessive wear and tear.
Then it hit me - should I do the same for my wife's RX350?

Long story short - I know the RX 350 uses 0w20 (probably for emissions purposes just like the supra)
should I change to a thicker oil to give it more protection?

What are you folks doing? Any common issues found with the 2021 model?

Thanks in advanced

 

No.

Thicker is not "better" (whatever that means). If thicker were better, you should fill your crankcase with grease.

Not sure what the problem is with Supras, but there are zero official recommendations from Lexus (or any other credible source) to deviate from the recommended 0W-20 for your RX.

 

Yeah....use what the manufacturer recommends and change it frequently. Any 0W-20 with proper certification will do. Oil changes are the cheapest way to keep your vehicle running well for 300,000 miles and beyond.

 

right so - the supra folks have figured out that the manufacturer's recommendation (toyota) of using 0w-20 is just to meet emission requirements - master mechanics recommended using a little bit thicker oil to prevent excessive wear and tear.
Capiche?

 

You aren't going to find any qualified resource on this forum that recommends a different oil for the RX than Lexus/Toyota recommends. Jason Fenske of EE makes the same recommendation. You might check the BMW forums, though.

 

I think you are missing the point of my message.


We Lexus owners think the best oil is the recommended 0w-20 - but maybe it's not....

 

I am not aware of any issues with the RX350 engine having "excessive wear and tear".
I like many RX owners buy the RX to keep around for 10 or 15 years and expect it to keep plugging along just fine on factory specs. My wife's 4Runner has 205,000 miles on 0W- 20 and it is experiencing no excessive wear and tear.

So I guess I do not Capiche but hey, its your car.

 

That's what I was asking . okay so you do Capiche! haha is your wife's 4Runner the 2GR-FKS engine also?

 

yeah,Toyota and Lexus put only one engine into all of their vehicles....even the Supra! My point was simply that Toyota makes engines that seem to do fine of 0W-20.

 

Any 0w20 will work fine. Mobil1 is an excellent oil, but so is the Kirkland 0w20 at about half the cost.
0w20 helps a little with gas mileage; I doubt your engine would notice any difference with 5w20.

Personally I stick with the manufacturer's recommendation for most fluids, but not for their intervals.
10K is too long for an oil change and lifetime is ridiculous for ATF.

 

My understanding is that all the motors available in the Supra are from BMW, not Toyota. The Supra is a JV vehicle with BMW and Toyota makes some significant changes; it's not just a rebadged BMW. The motors, though, are not where they've made changes. The 4 and the 6 are both BMW motors. Perhaps @kleenex can correct me if I'm wrong.
I think I understand what you are asking. Getting to a definitive and correct answer, though, brings up two more questions:
1) The Supra is fairly new. How do even master mechanics know for certain that a different oil will yield less wear? It seems like verifying that, and adjusting for all other variables, would be very difficult. If you have some pointers to some data, I'd read it just for curiosity's sake.

2) Even if is shown that Supra engine wear is reduced by using a higher viscosity oil and there are no ill effects, do those results on a BMW-designed and manufactured engine also apply to a Toyota-designed and manufactured engine? That seems like a stretch, unless the argument is that more viscous oil is always better for motors spec-ed for 0W-20.

 

I owned a 2018 BMW X3 M40i with the B58 twin turbo engine, and the engine in the Supra IS a BMW B58. The oil that BMW recommended was BMW Longlife-0w-20 14FE+ Gasoline. If you track the car, go heavier. For an RX, stick with 0w-20, and if not available, you can use 5w-20 until next oil change per Toyota.