Good fuel economy lol...
5W-30 motor oil
- Thread starter Joe T
- Start date
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- Thread starter
- #62
It may be the small tank confusing me but I could swear my leveled f250 sitting on big heavy ass 325/50/22s and a race tune costs about the same to drive around for a few days as the 600 does. It shows about 16mpg on the lie-o-meter and diesel is a little cheaper around here compared to premium gas.
Definitely do not buy one of these for mpg. Didn't notice one mpg difference going to 5-30.
Definitely do not buy one of these for mpg. Didn't notice one mpg difference going to 5-30.
EscapeWagon62
SILVER Star
This is simply a case of both sides being correct.
US - single oil recommendation
Global (LX600, LC300) - Multiple oils on approved list
There is no doubt the US spec is to comply with fuel economy ratings. If Lexus certified it based on the minute improvement to MPG offered by 0-20 and subsequently supported oils with slightly lower fuel economy performance, they could get nicked by EPA.
Fears that lexus would challenge your warranty based on a different oil usage could have merit but know that they would be fighting primarily to defend their fuel economy ratings vs actual negative impact of the oil on performance/durability.
There is zero chance Lexus would ever overtly support any oil other than 0-20 in the US even when their global markets clearly show alternatives.
All that being said, I’m running 5w-30 and may move to 0w-30 next round.
I think it's just the fact that there are so many YouTube videos of idiots saying that "you have to use 0w-20" because anything else won't flow correctly and damage the engine. The tolerances are to tight etc...Just annoying. I'll be running 5w-30 or I might just use amsoil 0w-30. But a 30 no matter what.
What’s the view on 0W-30? Don’t see it in any of the int’l manuals. Planning to run that in the LX and GX.
i know, it is weird they will list everything BUT 0w30 in international oil recommendations....haha
well guess what, me being a contrarian.. Im running 0w30... faulk em
By their own logic 0w is best for starting and 30 is best for engine protection
well guess what, me being a contrarian.. Im running 0w30... faulk em
By their own logic 0w is best for starting and 30 is best for engine protection
0w-30 is completely fine. Stepping back, this truck is used by the state department and special forces in complete s***holes. it’s used by African dictators and South American drug dealers. They use it bc it’s not precious. It can handle 0w-30 
- Thread starter
- #69
Just a guess, but there isnt anything readily available in 0-20, 5-20, or 5-30 that isn’t GF6A.
My bit of research has concluded avoid GF6A and anything over 900ppm zinc and 800ppm phosphorous. MB229.52 is a good starting point if you want to go down the rabbit hole.
I am also swapping out my transmission and transfer case fluids.
My bit of research has concluded avoid GF6A and anything over 900ppm zinc and 800ppm phosphorous. MB229.52 is a good starting point if you want to go down the rabbit hole.
I am also swapping out my transmission and transfer case fluids.
This was the same issue on my 200: US market gets thin oil and the ROW has a selection of viscosities to choose from and my bet is on fuel economy standards. Houston is hotter than hell, so I run 5-30. Like JoeT, the engine of BOTH vehicles sounded better at startup.
dms
GOLD Star
The other day I noticed a large sticker under the hood of the new LC500 that says 5W30. I have no idea if that is what was required in prior years but it is there now.
I know it’s a very different engine but this has been discussed endlessly on the LC200 sub forum for years…and I would say a majority of members have switched to 5w30 or higher. The 0w20 is definitely due to US mileage standards, no other reason. Given that the same engines are spec’d with thicker oils everywhere else in the world, I don’t think Toyota would or could deny a warranty claim based on using an oil they spec elsewhere.
I have seen tests online where 0w30 is thinner than 5w30 even when hot. None of these specs are consistent between oils and brands. 5w oils are still plenty thin at startup anywhere that isn’t frigid. I’ve been using 5w30 in my LC200 for awhile now , and my Toyota dealer gladly does the oil changes with Mobil 1 they stock (I guess they don’t keep Toyota branded 5w30?)
I have seen tests online where 0w30 is thinner than 5w30 even when hot. None of these specs are consistent between oils and brands. 5w oils are still plenty thin at startup anywhere that isn’t frigid. I’ve been using 5w30 in my LC200 for awhile now , and my Toyota dealer gladly does the oil changes with Mobil 1 they stock (I guess they don’t keep Toyota branded 5w30?)
dms
GOLD Star
I wish I had been using 5w30 in my 18 land cruiser all of these years instead of 0w20 for its first 35K miles.
I mean, 5w-30 has been fine in my 100 at cold cold temps (below zero), so I reckon you'll be okay.
I am just going to throw this out here and eat my popcorn 
dms
GOLD Star
I find that very interesting, especially since they recommend 0w20 in the 5.7 Land Cruiser.