The Old Lawnmower Club
Collection, Preservation and Display of Old Lawn Mowers
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valve seat syndrome

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techkidmr Mon, 03/10/2016

Not something to keep me awake at night but should I be using an additive such as Valvemaster?Or were these engines designed for lead free?Atco Commodore range 1986-92. 

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hortimech Mon, 03/10/2016

Short answer, yes

Long answer, they have an alloy block with hardened valve seat inserts.