10 replies to this topic

[roadrnnr]

Anybody know? I was surprised when I looked at the Fiat 500's that those little things had premium gas as recomended and in the Motorweek Road Test they mentioned they used premium in the 1.4 Dart.

That might start me thinking of the 2.0 again.

[Stratuscaster]

Recommended, but not required - with the obligatory small reduction in performance.

[DaveAdmin]

Not a bad idea though in the past, and probably still, if you put in lower octane gas, it activates the knock sensor and the timing gets dragged back. Whether you notice it or not is another question. I sometimes used regular gas in my Spirit R/T and while I'm sure I lost acceleration, it wasn't really that noticeable. That car had more power than it could handle anyway.

[Bob Lincoln]

My 84 Daytona Turbo Z says 87 required, 91 recommended. I've found that while there is usually no pinging on 87, I get about 2 mpg more with 91 octane, which does make it worth buying.

[Moparian]

I would run 89 in my SRT-4 on occasion with no ill effect, of course I really didnt boost it either when i did. I need to try a tank of 89 in my 200 since it says ill get more performance out of it.....just hard to justify when 89 is 14-15 cents more than 87.

[JRS200x]

The Owners Manual for the Dart states that 87 is the minimum required and 91 is the recommended.

[roadrnnr]

The Owners Manual for the Dart states that 87 is the minimum required and 91 is the recommended.

We have 89 around here but the 91 is about 15 cents above that.

[trumpet12345]

I would run 89 in my SRT-4 on occasion with no ill effect, of course I really didnt boost it either when i did. I need to try a tank of 89 in my 200 since it says ill get more performance out of it.....just hard to justify when 89 is 14-15 cents more than 87.

You sure? I never saw anything for the 3.6 in the 200 and town and country that said use anything beyond 87 for the normal cars. A few reviews for whatever mentioned it, but the solid info always said 87.

[Stratuscaster]

From the Chrysler 200 Owners' Manual:

This engine is designed to meet all emissions regulations and provide excellent fuel economy and performance when using high-quality unleaded “regular” gasoline having an octane rating of 87. The use of premium gasoline is not recommended, as it will not provide any benefit over regular gasoline in these engines.

[DaveAdmin]

Maybe he meant to write "2004"?

[Doug D]

Here's my thought's. Use the recommended fuel.

I have a 2006 Hemi-Powered Ram. Recommended fuel is 89 octane. It can run on 87. 89 octane is only 10 cts more per gallon so a difference of $2 oin a 20 gallon fillup vs using 87 octane. So for $2 more I get the rated hp/torque.

Even if the recommended fuel is 30 cts more per gallon it's only a few more dollars per tank.

FWIIW - I have run 87 octane in my Hemi and my-seat-of-the-pants sensor could feel no power reduction. Like I said, it's only $2 more on average for 89 octane so why not........ And I seem to get slightly better fuel mileage.

If ya can't run with the big dogs, stay on the porch......