Octane rating

**hens** · July 9th, 2006 01:15 PM

fyi, sa Petron (EDSA) Greenhills..May 100 octane sila. problema lang, P75 per liter nga lang..

**OTO** · July 9th, 2006 01:41 PM

Originally Posted by hens

fyi, sa Petron (EDSA) Greenhills..May 100 octane sila. problema lang, P75 per liter nga lang..

Anong tawag nila nun? Petron Ulul? ;)

**ryan** · July 10th, 2006 12:11 AM

Originally Posted by hens

fyi, sa Petron (EDSA) Greenhills..May 100 octane sila. problema lang, P75 per liter nga lang..

Ahh yes, nakikita ko yun. Usually pansin ko mga bumibili noon are professional motorcycle/car racers. Saw some buying by the drum.

**n2knee** · July 9th, 2006 03:40 PM

Originally Posted by 3ple4

Sabi ng Suzuki Makati na dapat 95 octane rating ang ilagay ko sa 06 Grand Vitara (imported from Japan) ko kasi yun daw sabi ng Suzuki Phil sa kanila tsaka nakasult din sa gas tank. Do you think I should follow it? So far XCS ang gamit ko. I'd really prefer using Xtra Unleaded para mas mura. Will this affect the performance of my GV?

ok lang paminsan-minsan kasi may knock sensor naman yan kaya kung gagamit ka ng lower octane kaysa sa recommended ng manufacturer, i-re-retard yung timing para maiwasan yung detonation. hwag mo lang sanayin na lagyan ng gasolina na mas mababa ang octane rating kaysa sa rekomenda ng Suzuki.

**mazdamazda** · July 10th, 2006 02:38 PM

Originally Posted by 3ple4

Sabi ng Suzuki Makati na dapat 95 octane rating ang ilagay ko sa 06 Grand Vitara (imported from Japan) ko kasi yun daw sabi ng Suzuki Phil sa kanila tsaka nakasult din sa gas tank. Do you think I should follow it? So far XCS ang gamit ko. I'd really prefer using Xtra Unleaded para mas mura. Will this affect the performance of my GV?

Your GV's ECU will compensate for the lower octane rating being used. It will either retard or advance your ignition's timing. This will result in poorer gas consumption figures.

**niky** · July 9th, 2006 04:38 PM

*yebo / redorange : errh.. that's what I was talking about... Although 98 RON should allow performance engines to run more aggressive timing... or less retardation, depending on how they were tuned at the factory, I think the power you get back from the 98 RON of Seail may be offset by the lower power you get from ethanol blend.

And yeah, there are some engines that are designed to run on lower octane fuel, like the older Accords. Some Japanese market engines specify 95 RON, though, and do lose a few hp by going down to a lower grade.

But as we don't seem to have really high octane gas, how are we to know?

Petron 100 Octane? I ought to try that out... :lol:...just to see the effects.

RE: 95 Octane - 3ple4 - Okay lang ang regular unleaded. Tama si n2knee, your car is supposed to have a knock sensor that retards timing and lowers power output for lower octane gasoline. In other words, it may or may not feel more sluggish, but it shouldn't be damaged by regular unleaded...

Just don't try the probinsyanong 87 Octane Regular...

**redorange** · July 10th, 2006 12:10 AM

Originally Posted by niky

*yebo / redorange : errh.. that's what I was talking about... Although 98 RON should allow performance engines to run more aggressive timing... or less retardation, depending on how they were tuned at the factory, I think the power you get back from the 98 RON of Seail may be offset by the lower power you get from ethanol blend.

And yeah, there are some engines that are designed to run on lower octane fuel, like the older Accords. Some Japanese market engines specify 95 RON, though, and do lose a few hp by going down to a lower grade.

But as we don't seem to have really high octane gas, how are we to know?

Petron 100 Octane? I ought to try that out... :lol:...just to see the effects.

RE: 95 Octane - 3ple4 - Okay lang ang regular unleaded. Tama si n2knee, your car is supposed to have a knock sensor that retards timing and lowers power output for lower octane gasoline. In other words, it may or may not feel more sluggish, but it shouldn't be damaged by regular unleaded...

Just don't try the probinsyanong 87 Octane Regular...

Yes, modern ecu controlled engines allow timing to be retarded to prevent or lessen knocking but using lower octane gas on it when it requires high octane can cause long term damage to your pistons. It would be better to follow the automaker suggested octane for your vehicle. In the same sense that people who say they "feel" more performance when they use high octane gas on a car that needs only low octane fuel are just wasting money.

**valskie01** · July 11th, 2006 02:37 PM

Originally Posted by redorange

Yes, modern ecu controlled engines allow timing to be retarded to prevent or lessen knocking but using lower octane gas on it when it requires high octane can cause long term damage to your pistons. It would be better to follow the automaker suggested octane for your vehicle. In the same sense that people who say they "feel" more performance when they use high octane gas on a car that needs only low octane fuel are just wasting money.

according to the owner's manual of my car: recommended fuel is 93RON, but for better performance use 95RON.

does it mean na mas mahatak or mabilis car ko if i use 95RON?

**mazdamazda** · July 11th, 2006 06:49 PM

Originally Posted by valskie01

according to the owner's manual of my car: recommended fuel is 93RON, but for better performance use 95RON.

does it mean na mas mahatak or mabilis car ko if i use 95RON?

What's your car?

Baka naman the ECU can adjust accordingly and use a more aggressive setting when it detects high octane fuel.