Premium gas [Archive] - Buick Cascada Forums

: Premium gas

Jack P.
07-18-2016, 05:00 PM
Has anyone tried using mid grade gas instead of premium, and what was the outcome.

Retired 2010
07-19-2016, 11:18 AM
I just filled up w/ it yesterday. I'll let you know. Someone else posted that they used 3 tanks of premium, then 3 tanks of mid-octane, then started using regular, and noticed no difference in performance, mileage, and no knocking, so I'm following his or her lead

08-21-2016, 10:36 PM
I've had my Cascada since March 11th and have always used regular gas. Seems to run fine.

08-25-2016, 11:11 AM
I use regular gas and the car runs and performs fine.

08-25-2016, 02:34 PM
I just added 1/4 tank of regular to 3/4 tank mid octane. Runs fine.
Next will be a full tank of regular

08-25-2016, 04:57 PM
Since I don't put a lot of miles on my Cascada (picked it up in Feb. and just this week went over 2,000 miles on the odometer) I think I'll spend the few extra dollars per fill up and get the premium octane gas.

09-25-2016, 09:23 PM
Hi to all, you too Mesaguy, hope all is well. We just got back from a 4000 mile trip in our Cascada. Went without a hitch. Car ran smooth and solid on the roads out east and up to New Brunswick, Nova Scotia, and Prince Edward Island. Plenty of power on the highway.

For the record, I use premium fuel, 93 octane. My car display shows 30.2 miles per gallon for the whole trip. I'll take that. I also didn't expect to get that.

Again for the record, you do have to be extra carefull moving in and out of traffic at freeway speeds. Rear window doesnt bother me and I use my mirrors but I do see how one can get into trouble. What was tough as well was the cool mornings with the rear window fogged or wet. You need to let the car warm up for a while. I can imagine a snow covered top over winter, it can get ugly.

Ride was great, seats did not bother us at all, both of us thought seats very comfortable, yet firm. NO back problems. Had 3 suitcase and one makeup bags in trunk, 1 in pass thru , and one little one in back seat. Took windscreen to cover back seat area. Car worked out great.

Never saw one other Cascada on the trip. A number of people asked what we were driving. Heard a number of new phases on the NAV system, like Toll Booths, lane narrows, system knew Canada and US very well.

09-27-2016, 03:49 PM
I ran three tanks of premium when I first got my Cascada and carefully recorded my mileage (I did not use the car's computer).

I then ran three tanks of mid-grade and again carefully recorded my mileage.

I then ran three tanks of regular.

I found that my mileage did not vary between each of the three tank tests and that I did not experience any knocking while running mid-grade or regular.

I have now have over 6K miles on my Cascada, most using regular and my mileage stays between 23 and 26 miles per gallon depending upon my highway miles.

I also found that my miles per dollar went way up when using regular.

I am going to stick with regular but I will keep an eye on my mileage.

Dennis Carlson
10-26-2016, 10:27 AM
The way I look at it is the manufacturer wouldn't specify premium if there wasn't a reason. A couple of friends of mine each bought a Pontiac Solstice with the fuel injected 2.4L four. In their manual it stated they could use regular fuel but would suffer a 10hp loss.

10-29-2016, 11:04 PM
After experimenting a bit, I'm back to using premium

11-03-2016, 06:01 PM
My NON Cascada calls for 91 (R+M/2) and although it runs fine on 87, I will continue using 93 as long as it costs less the. $3.00 a gallon. My other car, a Turbo 2.0 calls for 87, but again, I'll use 93 as long as it's less then $3.00 a gallon. One reason is that the Top Tier Premium fuels have more cleaners vice the lower 87 fuels.

Why $3.00 limit? Because (I'm old) when I was a kid, gas was between 27 and 29 cents a gallon. With inflation, that equals $2.70 and $2.90 a gallon. (Yes, gas is CHEAP today).

Dennis Carlson
11-07-2016, 01:57 PM
When I was young a car load of kids would dig into their pockets and come up with a one or two bucks worth of change to fill up. Gas was $.149 a gallon and you got your oil checked and your windshield washed.

11-07-2016, 03:06 PM
When I was in high school (1966) I worked at a brand new Standard Oil station on the interstate just south of Springfield, Illinois. I can still remember our prices---33.9 for regular and 37.9 for premium. People would pull up to the pump, look at the prices, and then drive off because they thought this new station's prices were way too high.

11-07-2016, 06:07 PM
When I first got my drivers license in 1972, gas was 32 cents a gallon.
A NY State inspection was $3. It's now $37.

11-10-2016, 08:40 PM
I have never used premium from day one. Not a bit of a problem. Car runs fine.

11-25-2016, 04:12 PM
An apparent electrical system problem has come up again in my Cascada (purchased in February/currently has just under 2,400 miles). This past June I posted about a very strange electrical problem that the dealership had trouble diagnosing until a technician saw a service bulletin regarding a possible cause for electrical failure. I thought it had been fixed but today my car was totally dead again. It's now at the dealership and I will report again when I get it back.