petrol
 

just after taking possesion of my 1985 1.8 sport. do i need to do anything to run it on unleaded maybe i need an additive or somthing, im a bit green ehen it comes to these things? also there is a note saying to bleed a valve when topping up coolant, whats that all about? any help would be much appreciated.

I run my 5 pot coupe on high octane unleaded with no real problems. admittedly I only do limited mileage but is seems ok. If in doubt I would maybe use an additive plus high octane.

I'm sure one of our more knowledgable members may be able to help more.

It'll run just fine on 95RON, maybe a bit more spritely with 98RON...

And no knowledge on the bleed screw, unless there's something around the heater matrix to vent out airpockets?

I've used 95ron normal pump unleaded in my Sport since I've had it and no problems at all and that's done 8000 mile since I've had it.

All audis since 1974 have been capable of running on unleaded iirc.

Could be about right cos all VW's since 1972 have been able to run on unleaded.

Put V Power in it and get better performance, and fuel economy, which offsets the extra cost.

I run both mb's on 95 ron and they are happy .........if i stick higher in they complain :( beastie requires diesel

how much mpg do you get in your 100?

I run mine on 97, seems to go a bit better and seems happy. 95 seems fine as well, 99 from Tesco is a no no, my car tends to cough and splutter! :nonod:

On the fuel filler cap it says 98, but then 97 is its replacement. Surely if it's set up for 98 originally then now its been retarded to run 95 unleaded at some point? Still a mystery as to whether mine's been adjusted to run 95... :confused:

28-32mpg.

Audi 80CL, best was 39.9mpg, when I was driving it like I stole it (one of many false alarms with No3 kid - from M4 J12 to M4 J16 no-one overtook me!)

The V Power definitely has more "oomph" in it.

In the 100, I drive 96 miles a day, steady A roads.

With 95RON, I cruise on the 1st butterfly, but need to use the 2nd butterfly to overtake (you can feel this in the accelerator pedal - the spring resistance is different - bit like a twin choke weber).

With 97/98RON (V Power or BP Ultimate), I can cruise and overtake without using the 2nd butterfly.

I have tried this day in and day out, up and down the M4/M5 when I was working in Gloucester last year too. Very repeatable conditions. Filling up every 4 days.

Steve

I'm been using Micky's old 100 for the past few days for work and am getting between 36 and 38mpg.
9 miles each way to work but about 7.5 of it is motorway which helps!

I have found injection cars will run on any unleaded but carb cars will need 97ron other wise they will pink under acceleration .

thanks for the info. now i must figure out how to post pictures up here, so u can all have a look at my pride and joy!:nod: