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Using Unleaded petrol
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Austin100



Joined: 06 Nov 2018
Posts: 44
Location: Denton

PostPosted: Fri Nov 30, 2018 5:12 pm    Post subject: Using Unleaded petrol Reply with quote

Hi
I have now got my Austin 10 gs1 to run (on unleaded). It has been in a lock up for 14/15 years and last time I got fuel you could get 4 star. Any advise of fuel and the additives you can get?
Do you need to put additives in or just use unleaded there seems to be so many different thories.
Cheers
Peter
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Rick
Site Admin


Joined: 27 Apr 2005
Posts: 20184
Location: Cheshire

PostPosted: Fri Nov 30, 2018 5:24 pm    Post subject: Reply with quote

Slow-plodding sidevalve engines should be fine with unleaded, I've never used an additive but I suppose if I was doing thousands of miles per year, then maybe I would.

RJ
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Rick (OCC Admin)
Various 1920s-1960s - Austin, Morris, Commer, Dodge etc.
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Austin100



Joined: 06 Nov 2018
Posts: 44
Location: Denton

PostPosted: Fri Nov 30, 2018 6:00 pm    Post subject: Reply with quote

Thanks Rick
It won't be doing many miles.
Peter
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Rick
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Joined: 27 Apr 2005
Posts: 20184
Location: Cheshire

PostPosted: Fri Nov 30, 2018 6:56 pm    Post subject: Reply with quote

What I would suggest though is look out for fuel that has low ethanol in it, I've not really studied this much but E10 is becoming more common than fuel rated at E5, which has a lower level of ethanol in it. Issues with ethanol in fuel include rubber fuel lines rotting. At one time, some brands of super unleaded had no ethanol at all, but whether that's still the case or not, I don't know.

RJ
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Rick (OCC Admin)
Various 1920s-1960s - Austin, Morris, Commer, Dodge etc.
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alanb



Joined: 10 Sep 2012
Posts: 337
Location: Berkshire.

PostPosted: Fri Nov 30, 2018 7:37 pm    Post subject: Reply with quote

I'm not sure how old your Austin is but before and just after the war petrol was more likely to have ethanol added (up to 20%) than lead.
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old tourer


Morris 8 two seater
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Austin100



Joined: 06 Nov 2018
Posts: 44
Location: Denton

PostPosted: Fri Nov 30, 2018 7:42 pm    Post subject: Reply with quote

It's a 1946 gs1
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Navigator21



Joined: 25 Jan 2019
Posts: 4
Location: West of Ireland

PostPosted: Sat Jan 26, 2019 6:46 pm    Post subject: fuel additives Reply with quote

I read somewhere on a forum that people were adding two stroke oil directly into the petrol tank to lubricate the head.

Don't take my advice but any thoughts appreciated.

Chris
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1934 Austin 12/4 heavy Berkeley
1940 Norton 16H
1953 Ariel Red Hunter
1967 triumph Vitesse
1967 Triumph Spartan 1600cc
1976 Reliant Scimitar
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Navigator21



Joined: 25 Jan 2019
Posts: 4
Location: West of Ireland

PostPosted: Sat Jan 26, 2019 6:54 pm    Post subject: fuel additives Reply with quote

I found the thread, and i have cut and pasted it directly. it makes sense to me!

When using Two Stroke oil it must be a mineral based product and not synthetic Best ratio seems to be 5ml per litre of petrol.
Much testing has been carried out by members of the STD register. I my case using the above ratio in a low compression side valve engine I have benefited from a noticeable increase in pulling power and a measurable decrease in exhaust manifold temperature. With the slow burn rate of modern fuel this additive is helping to ensure more of the burn take place in the cylinder. The very best thing I have achieved in years.


NOT MY WORDS!

Chris
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1934 Austin 12/4 heavy Berkeley
1940 Norton 16H
1953 Ariel Red Hunter
1967 triumph Vitesse
1967 Triumph Spartan 1600cc
1976 Reliant Scimitar
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alanb



Joined: 10 Sep 2012
Posts: 337
Location: Berkshire.

PostPosted: Sat Jan 26, 2019 7:48 pm    Post subject: Reply with quote

Pre war and up to the late 60s it was common for motorists to use an upper cylinder lubricant such as RedX .
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old tourer


Morris 8 two seater
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simonA30



Joined: 19 Jul 2018
Posts: 23

PostPosted: Mon Feb 04, 2019 11:35 am    Post subject: Re: Using Unleaded petrol Reply with quote

Austin100 wrote:
Hi
I have now got my Austin 10 gs1 to run (on unleaded). It has been in a lock up for 14/15 years and last time I got fuel you could get 4 star. Any advise of fuel and the additives you can get?
Do you need to put additives in or just use unleaded there seems to be so many different thories.
Cheers
Peter


Unless you plan to do loads of miles it doesn't matter. My A30 hasn't been converted, and I do put a little additive in it, but for the few miles she does, it really isn't important
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