Unleaded 95 Octane

**city** · December 9th, 2005 09:01 AM

Hi guys,

The car manual says to use unleaded with minimum 95 octane but what happens if you use unleaded with minimum 93 octane? Is this bad?

Which gasoline( shell, petron, caltex) has the unleaded 95 octane?

appreciate hearing from tsikoteers.

city

**the_wildthing** · December 9th, 2005 09:58 AM

Di ba 95 yung Petron XCS tsaka Shell Velocity?

Yung Caltex Gold ba 93 lang? Di ko na maalala.

**mazdamazda** · December 9th, 2005 10:00 AM

Many modern engines will retard / advance their timing to adapt to the lower octane fuel. This will however result in poor fuel consumption and engine performance.

All gasoline distributors here retail a 95 (and above) RON unleaded fuel (Petron Blaze, Petron XCS, Shell Velocity, Caltex Gold, Seaoil Unleaded, Seaoil Extreme, Total Infinity, etc.).

**baiskee** · December 9th, 2005 10:16 AM

97
Seaoil Extreme

96+
Petron Blaze

95 RON
Shell Velocity
Petron XCS
Caltex Gold
Seaoil Unleaded
Total Infinity

93 RON
Shell Premium
Shell Super Unleaded
Petron Xtra Unleaded
Caltex Silver
Total Unleaded

**ghosthunter** · December 9th, 2005 11:53 AM

Originally Posted by city

The car manual says to use unleaded with minimum 95 octane but what happens if you use unleaded with minimum 93 octane? Is this bad?

depends. If your car is equipted with a fuel quality sensor, it will adjust the ignition timing a bit. If it doesn't have one, it might run rough.

**box_type** · December 9th, 2005 12:06 PM

Originally Posted by ghosthunter

depends. If your car is equipted with a fuel quality sensor, it will adjust the ignition timing a bit. If it doesn't have one, it might run rough.

san sir nakalagay yung sensor? any idea kung ano-anung carmake and model ang mga meron ng ganitong device? tia!

**niky** · December 9th, 2005 01:53 PM

Usually, there is a "knock" sensor that detects if the engine is experiencing pinging or detonation (signs that the gas is burning BEFORE the sparkplug ignites), when this occurs, the system adjusts accordingly. On some high performance cars, you can lose up to 5-10 hp from using lower octane gas, but on most "95 Octane only" road cars, you'll lose just 1-2 hp, hardly noticeable in most situations.

**ineedmorehp** · December 9th, 2005 02:44 PM

Originally Posted by baiskee

97
Seaoil Extreme

96+
Petron Blaze

95 RON
Shell Velocity
Petron XCS
Caltex Gold
Seaoil Unleaded
Total Infinity

93 RON
Shell Premium
Shell Super Unleaded
Petron Xtra Unleaded
Caltex Silver
Total Unleaded

Lahat ba 'to unleaded, aside those already mentioned "unleaded"?

**mazdamazda** · December 9th, 2005 02:53 PM

Originally Posted by ineedmorehp

Lahat ba 'to unleaded, aside those already mentioned "unleaded"?

lahat yan unleaded.

**city** · December 9th, 2005 04:03 PM

wow..thanks for the info...i feel stupid..i thought shell velocity, petron XCs and vortex Gold are leaded...hehehe...pretty dummy...i sure have a lot more to learn..thanks for the patience guys.

city