182 unleaded octane grade

[bigmouk]

I have an imported 182 and inside the filler cap it recommends the car is run on 98 grade i.e optimax.

Are the uk renault dealer supplied 182s the same?

I have been running it on normal 95 unleaded while running it in. Now it is ran in I have opened it up a little and it suprisingly very quick although still a little tight.

Cant wait to get the optimax in there because there has to be some power loss if the engine is tuned to 98 grade?

 

[graham182]

Yup 98 will give u max performance. 95 wont damage the engine though. Best fuel would be nitrous though....

 

[bigmouk]

A mate had an imported subaru sti and was losing approx 30 bhp because he was runnin it on 95 grade.

I guess that is nearly 10% so the clio could be losing out on approx 18 bhp!

 

[edde]

I dont think the engine can use the advantage of increased RON. It probably will take account if the fuel to low spec but what spec that is I dont know.

You should bed the engine in hard though the first 20 miles. Easy running in can lead to rings not bedding in so lost power.

If the engine does take advantage the only real way of telling is to reset the ECU (pull the battery for 10minutes and reconnect). The ECU probably only re-tries for higher RON every now and again but with a reset will go to max settings and then adjust the time from there.

 

[Jeremy Townsend]

The 182 (and 172) in all European countries is set for 98