Unleaded petrol

marinastevie · Post by **marinastevie** » Fri Jun 22, 2007 10:00 pm

Does anybody know if you can run a 1.7 o series on unleaded without the additive?I have been using additive when filling up with fuel but it costs you.If anyone knows i would be most greatful

Marinanut · Post by **Marinanut** » Fri Jun 22, 2007 10:12 pm

This was always a thorny subject, but I had it on good authority from an ex-Rover employee that all 'O' series engines are capable of running on unleaded without additives, which was why one was bolted into an MGB o test its suitability. I ran my Ital estate on straight 95 octane unleaded for over a year without any problems, apart from adjusting the timing a tad.

marinastevie · Post by **marinastevie** » Sat Jun 23, 2007 10:10 am

Well mine is a late 1980 W reg 1.7HL Marina,so does this have the hardened valve seats?

marinastevie · Post by **marinastevie** » Sat Jun 23, 2007 10:25 am

I will give it a try and see but if anybody knows anymore please let us know,thanks

Marinanut · Post by **Marinanut** » Sat Jun 23, 2007 11:09 am

eloues wrote:
Marinanut wrote:This was always a thorny subject, but I had it on good authority from an ex-Rover employee that all 'O' series engines are capable of running on unleaded without additives,.
If that is the case why are later 'O' sereies fitted with harder valve seets?
That is from a ex-rover dealership and a engien reconditioners.

That proves one thing....even 'experts' can't agree!

ado28 · Post by **ado28** » Sat Jun 23, 2007 11:10 am

I think the car would be ok on unleaded Stevie. I run my classics on Super unleaded if I can and never had a days trouble with it

Clan Chieftain · Post by **Clan Chieftain** » Sat Jun 23, 2007 1:06 pm

8) there is a garage in motherwell still sells 4 star

ado28 · Post by **ado28** » Sat Jun 23, 2007 1:08 pm

where abouts Larry, in that case i'm off to the old well this afternoon, stick the kettle on buddy