28 replies to this topic

[lrostoke]

^^^ what he said ^^^^

But I was a bit optimistic with the figures I think, its probably closer to 7000 - 9000 depending on type of running

Motorway runs I get 50 mpg, round town probably high 30's - 40's

[Danny3320]

mine is a 1986 city e and i will need a lead additive when its back on the road

[krippy31]

when do u no if you need an octane boost with the lead replacement ?

[Beddo88]

Ok.. so what we're saying here is that i should use it as well? Mine seems to fall pretty much exactly on the swapover, end of Dec 1988. Its a mini city e, so is it still likely to need leaded petrol? How would i find out?

[Mk1Jim]

I fill up at Sainsbury's where i work with LRP

[buddylove]

Mine seems to run somewhat rough without the lead additive... At least that is what I have noticed a few times when I have run out and just had to fill up on unleaded fuel without the additive...

[1275midget]

yep, mine doesn't run as nicely without it - i wonder if its addicted...

[lrostoke]

I was always under the impression mid 1989 was the swapover from leaded to unleaded..

Another thread here http://www.theminifo...=unleaded year

The last bits interesting apparently a "green" pack was offered so some pre 1989 cars could be unleaded

We are talking standard cars here though there could be pre 1989 cars which have been converted since.

[T.Harper]

when do u no if you need an octane boost with the lead replacement ?

If, on unleaded fuel, your car pings under load, (low rpm, high gear uphill is the classic case) and it doesn't ping with super unleaded or higher octane fuel, then you need super unleaded or octane boost. Don't buy super unleaded unless your car needs it for this reason, as it is only super by having an increased octane rating. Buying super when your car has been timed and set up on regular unleaded is wasting your money.

[taffy1967]

I fill up at Sainsbury's where i work with LRP

I've heard that LRP is unregulated rubbish?

You're better off using unleaded with an additive instead. Or get the head converted.

[T.Harper]

I fill up at Sainsbury's where i work with LRP

I've heard that LRP is unregulated rubbish?

You're better off using unleaded with an additive instead. Or get the head converted.

Yep it's not likely to have any additive in that replaces the function of tetraethyl lead. Best to use unleaded with an additive.

[998dave]

I fill up at Sainsbury's where i work with LRP

I've heard that LRP is unregulated rubbish?

You're better off using unleaded with an additive instead. Or get the head converted.

Saying that though, how resulated is pouring in some additive with soem fuel. Do you exactly measure the weight of each that you put in? I'd suspect the LRP would be much more controlled!

Dave

[taffy1967]

I fill up at Sainsbury's where i work with LRP

I've heard that LRP is unregulated rubbish?

You're better off using unleaded with an additive instead. Or get the head converted.

Saying that though, how resulated is pouring in some additive with soem fuel. Do you exactly measure the weight of each that you put in? I'd suspect the LRP would be much more controlled!

Dave

There's just no knowing what exactly is in LRP though. You're just paying extra for unleaded fuel with god knows what added and there's no proof that it's going to do your classic any good in the long term.

[monster]

When they first changed 4 star over to LRP I filled my 1984 mayfair with what I thought was 4 star, I took it out on a club run later that evening and it was coughing and spluttering and generally not running right. A week later I drove past the garage I had filled up at the week before and they had a big sign up that said 'we are now selling LRP petrol, not 4 star' so I'm 99% sure that's what I put in my mayfair and it didn't like it. Ever since then I have used castrol valvemaster with octane booster.