Fuel Grade?

[Synjar]

Hmm, a quick google search returns interchangeable part numbers for the turbo assemblies between 4Runners and LC250s? I'm probably missing a nuance to the parts system, but seems like they wouldn't be identical if that were the case?

I still run 91, best we can get in CA. I'm pretty sure it's been confirmed the tunings maps are different from the 4Runner and Tacomas which is enough of a reason for me.

I was beating the topic to death with baseless speculation.

I thought that comment was hilarious.

 

[Chappy]

As I have yet to pull the trigger on a Land Cruiser I have a question for those that have...
I was told that premium fuel is recommended for the new Land Cruiser but that the new 4Runner requires only regular fuel?
Are you guys using premium grade fuel?
These days paying extra for premium fuel bites!

I think this has been covered a bunch here if you search. Premium is recommended. It's what I run. I knew it when I bought it. Technically you can put whatever you want in it if you want to save a few bucks or just buy the 4Runner.

 

[Synjar]

I think this has been covered a bunch here if you search. Premium is recommended. It's what I run. I knew it when I bought it. Technically you can put whatever you want in it if you want to save a few bucks or just buy the 4Runner.

Don A:

I use premium because there is a decal inside the fuel door that states Premium Fuel Required.

Right now it hurts filling up. .

 

[Sugarloafer80]

Based on all the baseless speculation, do you think it is possible a 4runner running regular and an LC running premium have non- identical tunes and this was just a bizzare coincidence????
I see a few , of course, baseless dyno runs out there suggesting a stock 4 runner gets pretty darn to close to the 325/465 numbers..but an LC gets a statistically significant increase in HP and torque. It is in the forum..Happy hunting.
The emissions concept actually makes a fair amount of sense! and of course the premium potentially giving the LC a 1 mpg mileage bump for its stats on the Monroney can't hurt either. Just more baseless opinion. The auto industry is full of BS like this and will continue.
In the end, some people will never question authority.......let's see if LC shows an HP bump at its first refresh....my gut says zero change is needed. Very convenient for passing CAFE down the road if you can say the ECU is unchanged

 

[Synjar]

We should start a poll.

Who is using Premium, Mid-Grade, Regular, and/or non-ethanol.

 

[Calokie]

We should start a poll.

Who is using Premium, Mid-Grade, Regular, and/or non-ethanol.

post a new thread on the subject and include the poll, inquiring minds want to know

 

[D-mac]

Based on all the baseless speculation, do you think it is possible a 4runner running regular and an LC running premium have non- identical tunes and this was just a bizzare coincidence????

Toyota will never reveal the tuning maps for any of their vehicles including Land Cruisers, us customers can only do dyno runs to get a feel for what the OEM tunes are like. But dyno runs for full time 4WDs with different grades of gas cost time and money. Stillen did some on a Taco and put it on YouTube btw. It's way better keep making more posts on this forum about fuel grade instead!

 

[Begneaux Merci]

I would say using fuel from a solid station like Shell, Chevron, etc rather than Kroger or bobs discount gas is much more important than worrying about octane. That being said I do use Premium, but have the tactical minvan with a COBB tune for Premium so there is that

 

[perigree]

Toyota will never reveal the tuning maps for any of their vehicles including Land Cruisers, us customers can only do dyno runs to get a feel for what the OEM tunes are like. But dyno runs for full time 4WDs with different grades of gas cost time and money. Stillen did some on a Taco and put it on YouTube btw. It's way better keep making more posts on this forum about fuel grade instead!

But more time and money than the CAFE savings they get? Especially on ~80k units sold? A tune that they already probably developed when designing the engine? I find it hard to believe they don't test the different octane ratings during development.

If anything, I think it's always best to stir up as much misinformation as possible. Maybe someone won't be able to resist the urge to be right. That's how classified tank specifications keep getting leaked on Warthunder Forums... Steam Community :: Guide :: List of Classified Document Leaks

I would say using fuel from a solid station like Shell, Chevron, etc rather than Kroger or bobs discount gas is much more important than worrying about octane. That being said I do use Premium, but have the tactical minvan with a COBB tune for Premium so there is that

Side note, do people really feel a difference with these tunes? The dyno curve looks like it only makes a drastic difference after 3000 RPM, but it's pretty rare that I actually need to wring out the power train that far.

 

[Begneaux Merci]

But more time and money than the CAFE savings they get? Especially on ~80k units sold? A tune that they already probably developed when designing the engine? I find it hard to believe they don't test the different octane ratings during development.

If anything, I think it's always best to stir up as much misinformation as possible. Maybe someone won't be able to resist the urge to be right. That's how classified tank specifications keep getting leaked on Warthunder Forums... Steam Community :: Guide :: List of Classified Document Leaks




Side note, do people really feel a difference with these tunes? The dyno curve looks like it only makes a drastic difference after 3000 RPM, but it's pretty rare that I actually need to wring out the power train that far.

100%. They have a few modes but defiantly shifts and drives better. After adding the lift and larger tires it brought it back within stock performance on 93 OEM+ The Sport mode tune defiantly gives it a noticeable power/acceleration gain but at the cost of 13 vs 15 mpg avg (on the lifted + larger tires)

 

[izzysanchez]

Use 91 or you will burn in hell. My second cousins' daughters' friend dated an engineer that once heard in the refinery bathroom from someone he couldnt see that they also heard in the cafeteria by one of the cooks that you have to use 91 or die. So there. You must. The end.

But at last use Top Tier Gasoline certified stations. No, all gas is not the same. Plenty of studies out there about that subject.

https://www.aaa.com/AAA/common/AAR/files/Fuel-Quality-Full-Report.pdf

 

[Altitude]

I would say using fuel from a solid station like Shell, Chevron, etc rather than Kroger or bobs discount gas is much more important than worrying about octane. That being said I do use Premium, but have the tactical minvan with a COBB tune for Premium so there is that

They’re pretty much all supplied by the same regional fuel refiners, so I wouldn’t assume Shell/Chevron gasoline is inherently “better fuel” than Kroger simply because of the brand on the canopy.

The meaningful differences are the additive package and the station’s storage. A Texaco station in the middle of nowhere on a poorly traveled road is more likely to have problematic [old] gas than a Kroger in a busy residential neighborhood.

 

[Synjar]

My nephew on my wife’s side of the family who works at the refinery was the guy in the bathroom the engineer your second cousin’s daughter’s friend dated that he could not see but could hear. You are correct my wife’s nephew told me that same exact thing when he heard I bought a new LC. He heard it from a Toyota employee who was related to a senior Toyota Engineer’s first wife and was telling a friend in the refinery bathroom. I’m not risking it either.

 

[6-funk]

Definitely agree with the fresh gas theory, many years ago I was driving my WRX home on I 5 some where between LA and SF, filled up with supposedly 91 from Chevron! Bout 2 hours later it really started to hesitate and lose power. I took it to the dealer and they said "oops you put regular in by mistake!" Their solution, drive it till the tank almost empty then refill with 91. It took almost 1000 miles to drive the bad gas out of the tank. I've run both 91 and 87 in the LC and it's never behaved like my '07 Subaru did. The Subaru would really hesitate as soon as the turbo spooled up. The LC still pulls smooth regardless. I've seen no mpg loss with 87 too.

 

[D-mac]

But more time and money than the CAFE savings they get? Especially on ~80k units sold? A tune that they already probably developed when designing the engine? I find it hard to believe they don't test the different octane ratings during development.

Yes it's common for engine tuners to specify a grade of fuel that the tune is optimized for. For example, there's could be a tune for E85, another tune for 87 (like a 4Runner/Taco), a separate tune for the Toyota Crown, high performance/octane race gas tunes, etc. Most people do not have inexpensive access to an AWD dyno. Imagine the possibilities! There could be dyno tests of fuel grades all the way from 87 to 94+, depending on the geographic area/fuel suppliers.

 

[ScottNC]

post a new thread on the subject and include the poll, inquiring minds want to know

Using premium although the dealership told me it is not required. I didn't ask; they voluntarily told me...so using regular shouldn't be a problem with operation or warranty, etc.

 

[cvx5832LC]

My observations from using both Regular and Premium across 67K miles on the LC. Control is a Premium-only 2008 C300 in similar or exact usage (my commuters).

• On Regular I was paying less for gas but took a hit in mileage. Result was -$0.007 per mile against my control.
• On Premium I was paying more for gas but got better mileage. Result was -$0.007 per mile against my control.

I was a long time advocate for Regular. Now that I know better (cost is the same), I am sticking with Premium because it no longer has to downshift when I roll into the throttle in day to day driving.

 

[ultane]

Using premium although the dealership told me it is not required. I didn't ask; they voluntarily told me...so using regular shouldn't be a problem with operation or warranty, etc.

Welcome to the asylum.

 

[Sugarloafer80]

All interesting observations.
My GUT tells me the tune on the 4Runner and LC are identical, but due to its larger size, and CAFE requirements, they know full well they get slightly better mileage with premium and the regurgitation about 70K vehicle, can't afford premium, yada,yada, yada is all over these threads.........Based on perceived financial feelings, not scientific fact. The dyno runs I have seen strongly suggest an LC on premium puts out more than 325/465...Is there a cost differential. Yup! Is it as much as you think, probably not. Does she run better on premium, yup! Are those tunes out there just capitalizing on the already known increased power of these motors when fed premium, probably.
I run premium unless I need gas at a station that is out of hand..........or its nice and cool, low load running. I am in the land of 93 octane so 50:50 gets us 90........The occasional half tank fill up, stuff like that. I don't tend to fill up on Reg from dead empty........your vehicle won't die on regular as owners that have never run a drop of premium will attest to. Frankly, in winter when predetonation is less of an issue, I would tend to use regular more. Had an engineer teach me about that 30yrs ago. For all those folks out there that drive like grandma, premium is probably a waste esp if you have never figured out were the floor is with your gas pedal..............just run the regular and throw a bottle of techron in every 3000 miles or so..........

 

[Synjar]

Techron?