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Author Topic: Unleaded additive ...  (Read 608 times)

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HolyCount

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Unleaded additive ...
« on: 21 May 2009, 20:36:42 »

The buggy I am building (eventually -- all the bits are there in the garage but those fairies refuse to come out at night and put them together !!) .... needs a higher octane than unleaded will give -- so I am resigned to using an additive -- no real problen there though.  However, just saw these things on ebay and remembered them from many years back.  Any of you science types think they work, and if, so, how ( in simple terms).

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=180351147580&ru=http://search.ebay.co.uk:80/180351147580_W0QQadgroup_idZrawQQfclZ4QQfnuZ1QQfsopZ1QQkeywordZduttonQ20kitQ20carsQQoriginZhttpQ3aQ2fQ2fproboardsQ2ecomQQtestZGadgetQ5fKWQQfviZ1
« Last Edit: 21 May 2009, 20:39:58 by HolyCount »
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tunnie

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Re: Unleaded additive ...
« Reply #1 on: 21 May 2009, 20:38:14 »

what things?
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STMO123

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Re: Unleaded additive ...
« Reply #2 on: 21 May 2009, 20:39:12 »

HA HA I'm not the only silly old duffer on here ;D
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HolyCount

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« Last Edit: 21 May 2009, 20:41:17 by HolyCount »
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STMO123

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Re: Unleaded additive ...
« Reply #4 on: 21 May 2009, 20:43:40 »

If you're unsure, why not use an additive.
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HolyCount

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Re: Unleaded additive ...
« Reply #5 on: 21 May 2009, 20:44:47 »

Quote
If you're unsure, why not use an additive.

As you can see from the above -- I'd keep forgetting to put the stuff in  ::)
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STMO123

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Re: Unleaded additive ...
« Reply #6 on: 21 May 2009, 20:45:52 »

Quote
Quote
If you're unsure, why not use an additive.

As you can see from the above -- I'd keep forgetting to put the stuff in  ::)

It's a buggy. One tank of fuel a month? :-/
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redelitev6

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Re: Unleaded additive ...
« Reply #7 on: 21 May 2009, 20:46:23 »

I used to use castrol valvemaster on my old merc,i was never convinced about its perfomance though,the valves did eat their way into the head ,have you thought about an unleaded head conversion? it should work out better in the long run  
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HolyCount

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Re: Unleaded additive ...
« Reply #8 on: 21 May 2009, 20:52:04 »

Quote
I used to use castrol valvemaster on my old merc,i was never convinced about its perfomance though,the valves did eat their way into the head ,have you thought about an unleaded head conversion? it should work out better in the long run  

Probably right -- it's only an old A series 998, so easy enough to do --- just another thing to add to the list.  Decided to rebuild the calipers at the mo -- took two days to persuade the bleed valves out without shearing them off .... if it's not one thing, it's another  ::)
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Kevin Wood

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Re: Unleaded additive ...
« Reply #9 on: 21 May 2009, 21:04:44 »

If you need the octane, use super unleaded - or retard the ignition a little - easy on clockwork engines.

In fact, it's always worth giving the timing a tweak one way and the other and seeing where it's happiest.

I would probably be inclined to run it until the valve seats are shot and then replace them. Probably cheaper than buying loads of potions, TBH, and it's not challengine to whip the head off an A-series. Those pellets of lead seem like snake oil to me.

Kevin
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Vamps

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Re: Unleaded additive ...
« Reply #10 on: 21 May 2009, 21:12:24 »

Those pellet things were shown to be of no benefit, in one of the Classic Car magazines in the early 90's shortly after I bought two for a Landrover, that I later discovered I did not need anyway ::) ::)
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