There is no longer a 20 cent/gal difference in price, premium is now more like 40-50 cents/gal more than regular. It is beginning to make diesel look like a bargain. Would it hurt my 2004 C320 to run less than premium in it? With this trend in price continuing, I would think twice about buying another auto that requires premium petrol.

 

FI,

Thanks for the reply.

I might think twice buying another MB if it requires premium.

 

If you drive gently and it is not too hot, you are probably OK, with just a small reduction in available power.


If you make it knock and it then retard the timing, it is bad for the engine in the long run.


Buy GOOD regular (or better yet, mid-grade) gas.

 

One fewer bag of $3.99 chips per week
1 fewer $4.50 lattaes per week
2 fewer packs of smokes per month.
Then you can drive it as you would like to.

 

Exactly what engine failure are you predicting?

 

I guess I am one of the few who has not been desensitized to paying ~$4/gal, especially when domestic oil production is up and oil companies are reaping record profits.