[Kal101]

Now here’s a strange thing. Normally I only use Bp diesel and mock supermarket fuels ( diesel) because my highly sensitive and well calibrated arse dyno conclusively proved that my 335d felt much better and ran smoother on the good stuff.

However currently I’ve got a mix of Shell, Bp, Texaco, Sainsbury and Tesco fuel and my super accurate arse dyno tells me not only is the car running as smooth but is a lot more economical- with a range of 550 miles on the current tank of unholy fuel cocktail!!

Only other changes were a run down to Cornwall again ( went 6 weeks earlier) plus a new battery a couple of months back plus an air con recharge.

What’s happening to the world

[Alscoob]

Originally Posted by Kal101

Now here’s a strange thing. Normally I only use Bp diesel and mock supermarket fuels ( diesel) because my highly sensitive and well calibrated arse dyno conclusively proved that my 335d felt much better and ran smoother on the good stuff.

However currently I’ve got a mix of Shell, Bp, Texaco, Sainsbury and Tesco fuel and my super accurate arse dyno tells me not only is the car running as smooth but is a lot more economical- with a range of 550 miles on the current tank of unholy fuel cocktail!!

Only other changes were a run down to Cornwall again ( went 6 weeks earlier) plus a new battery a couple of months back plus an air con recharge.

What’s happening to the world

Bosh some Millers ecomax or Archoil in the mix that'll liven up the but dyno

[NotGotABimmer23]

Maybe your arse Dyno needs a reset, a cocktail stick into the recessed hole and hold it down for 30 seconds. Then try it again....

[Mustard3]

Interesting. I've always used 99 ron in my 340i but due to the current crisis down south I've put a tank & a half of 95 in. Can't feel any difference with my dynobutt but maybe it takes a few more tanks for the DME to adapt.
Saving 12p a litre though.

[GOF_430d]

Previously I would treat my car to a tank full of premium diesel and whilst the drive felt better, it would never justify the increase in cost.

Occasionally I treat the car to a wash, albeit by hand and invariably within a couple of days it looks dirty again. So I don't bother washing it.

[Kal101]

Originally Posted by kylemacca01

Maybe your arse Dyno needs a reset, a cocktail stick into the recessed hole and hold it down for 30 seconds. Then try it again....

[KRS_SN]

it's possibly the battery. After I replaced mine when I sensed it was on its last legs, cars mpg rose and car ran super smooth.