Is it a big issue with not using the same brand? I do consistently use premium, however, because I travel a lot, its harder for me to fill at using the same brand of gasoline. Another (minor) reason is because of price. I only choose btwn Mobil, Exxon, Shell, BP, or Gulf. I have yet to use any other brands.

Just wondering!

Thanks!

 

There's so little difference amongst gas producers, I find it hard to believe there could possibly be a problem mixing gas. You're fine....

 

I only use premium and have used multiple different gas brands without any problems. (Wawa, Valero, Shell, Exxon, Royal Farms, etc) You get the picture.

 

considering the fact that my parents own three different gas stations ... i fill up at different gas stations so i dont think it makes any difference.

 

The gas truck delivers the same gas to bp/hess/citgo etc....

its like milk.... its doesnt matter what brand you buy vitamin D is vitamin D and it all tastes the same.

 

Agreed, no worries.

 

Absolutely no worries. Just get the octane right.

 

Best example there is. Brand doesn't matter as long as you use the same grade.

 

What if you switch constantly between premium and the middle grade?

 

there isnt much difference between gas station....but.....i have been pumping gas from SHELL for the past 12 years.

 

i don't see any difference between gas brand.

 

Your just gonna burn it anyways. Its not like chevron is gonna burn differently from shell.

 

Just keep to the same octane and should be fine.

 

@vital

What if you switch constantly between premium and the middle grade?

No major issues in the short run. The car should compensate the timing to match the lower octane and you also lose some HP and gas mileage. Worse case, you'll get engine pings and knocks...

Have you checked your MPG when you do that? You should be getting worse gas mileage. So the amount of MPG you lost should be equivalent to the price difference of buying Premium. I suggest just sticking with Premium. You had the cash to buy a luxury car, you should at least treat it like one.

I would not recommend lower grade on IS250... you will build-up carbon faster in your engine.

 

It always cracks me up how people buy a $50k Lexus and then try to save 10 cents a gallon on gas, the difference is what AT MOST $2 a tank???