Hello,

I was wondering if the 3GS with the 3GR-FSE can run on E10 fuel. I know that Lexus listed it in the incompatible with E10 section, but I was wondering what would be the consequences. I couldn't really find any info about this online so I came here to ask. E5 fuel is harder to find in Czechia, so it would be great if it could run E10, even if it needs modifications.

Thanks

 

First time I ever hear of e10 fuel. But if you own the car give it a shot and see how the car preforms. Sure the ecu might take time to adjust to the new fuel. But thats why cars have o2 sensors to adjust the fuel mixture accordingly. I dont see you having an issue

 

It's basically petrol with up to 10% bioethanol, it's really common in Europe, most cars are fine with it, but older cars apparently don't mix well with that because of rubber and aluminium corrosion.
And on the Lexus website, they mentioned that all of their cars made after 1998 can run it except these:

• IS250 2.5 litre V6 with engine 4GR-FSE made between August 2005 and September 2007.
• GS300 3.0 litre V6 with engine 3GR-FSE made between January 2005 and September 2007.
• LS460 4.6 litre V8 with engine 1UR-FSE made between August 2006 and September 2007.

These are recommended to still use the E5, which has up to 5% bioethanol. People are reporting way worse fuel economy and performance (struggling to reach top speed etc) using E10 so in the long run it might be cheaper to just find and buy the more expensive E5. I'd have to test it out
I don't have the GS300 yet, but I'm talking with the dealership about buying it for 7k euros, however I want to make sure I know the ins and outs of the car before pulling the trigger.

 

I would just make sure its not an imported US spec 2006 GS300, as those have motor issues. I dont know much about the japanese version of the GS300 but many markets outside of the US have had them. I believe the jap and US spec differ on the fuel injection system

 

Why dont you see if the dealer will let you borrow the car, fill it with gas and test it. Im sure they wouldnt mind someone filling up there vehicle with fuel

 

Sounds like a plan, I'll talk with them again later this week and I'll see how it goes.
Thanks for the tips.