One other thing, check carefully what the octane requirement label says.
European cars, especially older ones, will often specify octane in RON units -
Research Octane Number. There is another unit called Motor Octane Number (MON),
and US fuel grades labeld on the pump are normally the average
Bear in mind that the octane rating is for the worst case scenario - hot
engine, mashing the pedal to the floor from a stop - to prevent detonation.
Modern engines with "knock" sensors will retard the ignition when detonation
(knock) is detected to keep from grenading the engine. The retarded
> In my wife's car, most of the throttle response is in the first 25% of pedal
> travel. Beyond that the throttle doesn't do much.
I'm convinced this is a deliberate attempt to trick the driver into
thinking a car is more powerful than it is. Of course, it wreaks
havoc when you actually want
> In town, it feels much less powerful than modern cars
One thing I've noticed about my MBs is that they seem to design throttle
response differently.
In my wife's car, most of the throttle response is in the first 25% of pedal
travel. Beyond that the throttle doesn't do much. You get used to
The 104 has more power than the 103. The 124 with a 103 will get about the sale
mileage as a v8, so might as well get a 420 or 560SEL.
Sent from my iPhone
> On Oct 2, 2023, at 11:26 AM, Donald Snook via Mercedes
> wrote:
>
> I had to drive my recently purchased 90 124 300E on a longish
Right. I could do that. But, on the best tank I was using 89 and driving 80 mph
and got 21.8. It makes me wonder if 91 is really going to make a difference.
Donald H. Snook
> On Oct 2, 2023, at 11:40 AM, Allan Streib wrote:
>
>
>>
>> The car requires (?) 91 octane. But, every time I
> The car requires (?) 91 octane. But, every time I have gotten gas they only
> have 93.
If you know roughly how many gallons you'll be buying, fill up half of that
with 87 and then finish off with 93. A bit of a nuisance in that you'll need
two transactions.
I had to drive my recently purchased 90 124 300E on a longish trip. I drove
from Memphis to Biloxi, MS and drove a lot down there for a week and drove back
last night.
I don’t know if it’s my imagination or if a couple of Italian Tune -Ups made a
difference. It seemed to drive better on
