Leaded AND unleaded?

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NH325CAB
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Post Tue Jul 18, 2006 7:21 pm

The inside of my filler cap says it takes leaded fuel..... is this true? I wouldn't consider putting leaded in but was just curious as to how it can run on both!
dobbie82
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Post Tue Jul 18, 2006 7:31 pm

my e-reg and the touring i had can take both, but seeing as u cant buy 4star and LRP is rare now, i use unleaded but the highest octane possible
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Simon13
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Post Tue Jul 18, 2006 7:49 pm

they all run on both no problem

325's do anyway
Dan318-is
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Post Tue Jul 18, 2006 7:54 pm

early 325is were designed to run on four star. but should be ok on unleaded now
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Brianmoooore
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Post Tue Jul 18, 2006 9:55 pm

dobbie82 wrote:my e-reg and the touring i had can take both, but seeing as u cant buy 4star and LRP is rare now, i use unleaded but the highest octane possible
Total waste of money. it'll run just as well on the lowest octane you can buy in the UK, with no downside what so ever.
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Brianmoooore
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Post Tue Jul 18, 2006 9:59 pm

NH325CAB wrote:The inside of my filler cap says it takes leaded fuel..... is this true? I wouldn't consider putting leaded in but was just curious as to how it can run on both!
The only reason that some cars can't be run on leaded fuel is because lead will kill a cat. As most E30s don't have cats, they will run happily on either.
Leaded petrol is virtually unobtainable now in any case, and, AFAIK, the same restrictions don't apply to LRP.
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Brianmoooore
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Post Tue Jul 18, 2006 10:01 pm

318-is wrote:early 325is were designed to run on four star. but should be ok on unleaded now
As long as the valve seats haven't been recut, there will have been enough lead hammered into the seats in the car's earlier life to protect them now.
Turbo-Brown
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Post Tue Jul 18, 2006 10:55 pm

Think the seats are hard enough to run on unleaded in any case, or at least I hope they are as mine have been re-cut.

Really not worth worrying about either way though: If the seats recede, have harder ones fitted then, not before :)
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DRIFTBOY
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Post Thu Jul 20, 2006 12:55 am

I know it's a different engine but years ago I ran a 1983 Capri 2.8i on unleaded for about 20,000 miles and noted no ill effects to compression or performance! :D
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Brianmoooore
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Post Thu Jul 20, 2006 12:59 am

Turbo-Brown wrote:Think the seats are hard enough to run on unleaded in any case,
They are certainly harder than the crap Ford use on the Zetec engines.
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Post Thu Jul 20, 2006 7:35 am

In that case we really shouldn't have to worry about seat recession :)
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