Wished that our petrol here had octane ratings just like the UK or US. I guess the need for this thread wouldn't have arisen. I've decided to make this thread because this year alone, I've had 3 separate experiences of bad petrol in my car. I'm currently having one.

I also believe different car may react differently so what are the signs you normally notice when you buy bad gas.

For my 2003 Accord LX rarely would it show immediate signs. But it did do so some years back by throwing a Check Engine Light once exiting the filling station. A bottle of injector cleaner and some driving cleared the CEL.

Didn't have a scanner then so I couldn't check for the codes!

By far the most common sign the Accord gives me when I've got bad gas shows up the next morning after filling up...A sluggish rise in RPM at startup

Usually in this model of Accord once the engine is cranked, the RPM go sharply to 1500RPMs and then reduces as the car warms up. But with bad petrol sometimes, it would just sluggishly rise to 1500RPM. It may even stall!

I remember how I thought I had a fuel pump issue when I experienced this for the first time. I usually deal with this by driving till fuel light comes on then I fill up and add injector cleaner . Voila its gone

Should one drain the fuel rather than drive?

I was experiencing it with my mercedes 230E back in the days but have not experienced it with my current honda accord. Maybe because I buy petrol from only one filling station in PH.

I always buy fuel frm abt two filling station so ve nt experienced this yet. I always ve this in mind while buying fuel.

Another sign I noticed, is fluctuating idle speeds. I was surprised how this vanished with new and good fuel