What fuel grade are you using in your RX350?
#106
#107
The manual doesn't say.
Does it recommend 87 but can use 91?
Does it recommend 91 but can use 87?
The manual doesn't state.
I want to believe that the RX 350's engine is engineer to accept 87, but nobody can prove that, hence this thread exists.
This what 2017 Ford Mustang manual says.
2.3L EcoBoost and 5.0L V8 Engines We recommend regular unleaded gasoline with a pump (R+M)/2 octane rating of 87.Some stations offer fuels posted as regular with an octane rating below 87, particularly in high altitude areas. We do not recommend fuels with an octane rating below 87.To provide improved performance, we recommend premium fuel for severe duty usage, such as trailer tow. ( lol at the race track they mean )
and in the specification section, it shows this 310 HP @ 5500rpm (93-octane fuel)
Again, the Lexus manual is very unclear.
and in the specification section, it shows this 310 HP @ 5500rpm (93-octane fuel)
Again, the Lexus manual is very unclear.
#108
Lexus manual is very clear.
For RX350 it states use 87, what is unclear about it?
For RX350 it states use 87, what is unclear about it?
#109
Does it recommend 91 but can use 87?
The manual doesn't state.
The government site also believes that 87 is what it recommends.
But I want to see that from my own owner's manual.
When I asked the my sales guy at the dealer, he said he'd use Premium if I wanted to keep the car for a long time.
I can't argue that he's wrong because the manual doesn't state anything other than it recommends "87 or higher".
#110
Does it recommend 87 but can use 91?
Does it recommend 91 but can use 87?
The manual doesn't state.
The government site also believes that 87 is what it recommends.
But I want to see that from my own owner's manual.
When I asked the my sales guy at the dealer, he said he'd use Premium if I wanted to keep the car for a long time.
I can't argue that he's wrong because the manual doesn't state anything other than it recommends "87 or higher".
Does it recommend 91 but can use 87?
The manual doesn't state.
The government site also believes that 87 is what it recommends.
But I want to see that from my own owner's manual.
When I asked the my sales guy at the dealer, he said he'd use Premium if I wanted to keep the car for a long time.
I can't argue that he's wrong because the manual doesn't state anything other than it recommends "87 or higher".
The following users liked this post:
Oldfart (01-24-18)
#111
Does it recommend 87 but can use 91?
Does it recommend 91 but can use 87?
The manual doesn't state.
The government site also believes that 87 is what it recommends.
But I want to see that from my own owner's manual.
When I asked the my sales guy at the dealer, he said he'd use Premium if I wanted to keep the car for a long time.
I can't argue that he's wrong because the manual doesn't state anything other than it recommends "87 or higher".
Does it recommend 91 but can use 87?
The manual doesn't state.
The government site also believes that 87 is what it recommends.
But I want to see that from my own owner's manual.
When I asked the my sales guy at the dealer, he said he'd use Premium if I wanted to keep the car for a long time.
I can't argue that he's wrong because the manual doesn't state anything other than it recommends "87 or higher".
#112
Advanced
My sales guy only told me to use Premium to keep the injectors clean. But then again we can use one or twice a year the injector cleaner product into a full gaz tank...
#113
#114
Advanced
#115
Racer
Again it's a matter of interpretation! You read that way, I instead read it that you may not go below 87, the engine is designed for premium, but thanks to the electronics it can compensate for lower octane up to a point, the computer will retard/advance before/after Top Dead Centre (BTDC/ATDC). Now there are other benefits to premium grade which are not apparent to the average driver, especially in engines with GDI one of which is the lower amount of deposit on valve-seats and piston-heads. Now I'm not talking to people who lease or only keep a vehicle for a couple of years, these will never see the benefit of premium gas. Those like me who keep a vehicle for 5 or more years will, they'll spend less money in maintenance, it's a bit of pay a little sooner or a lot later + inconvenience. The choice is ours!
#116
Advanced
Again it's a matter of interpretation! You read that way, I instead read it that you may not go below 87, the engine is designed for premium, but thanks to the electronics it can compensate for lower octane up to a point, the computer will retard/advance before/after Top Dead Centre (BTDC/ATDC). Now there are other benefits to premium grade which are not apparent to the average driver, especially in engines with GDI one of which is the lower amount of deposit on valve-seats and piston-heads. Now I'm not talking to people who lease or only keep a vehicle for a couple of years, these will never see the benefit of premium gas. Those like me who keep a vehicle for 5 or more years will, they'll spend less money in maintenance, it's a bit of pay a little sooner or a lot later + inconvenience. The choice is ours!
Premium (91) gas does not contain more energy than regular (87). Premium only contains an agent that prevents the early detonation, giving a more precise timing on the time and duration of the blast of energy. The higher octane is really more effective for engines made to run at higher RPM (like sport cars).
For engines tuned for 87, get no gain in any way from premium (see the Wikipedia link, and there are studies that demonstrates that).
#119
Advanced
#120
Again it's a matter of interpretation! You read that way, I instead read it that you may not go below 87, the engine is designed for premium, but thanks to the electronics it can compensate for lower octane up to a point, the computer will retard/advance before/after Top Dead Centre (BTDC/ATDC). Now there are other benefits to premium grade which are not apparent to the average driver, especially in engines with GDI one of which is the lower amount of deposit on valve-seats and piston-heads. Now I'm not talking to people who lease or only keep a vehicle for a couple of years, these will never see the benefit of premium gas. Those like me who keep a vehicle for 5 or more years will, they'll spend less money in maintenance, it's a bit of pay a little sooner or a lot later + inconvenience. The choice is ours!