i've a hayter harrier given to me 19 years ago, by someone who knew i would look after it . it had been her late dads. just got a service manual from [getanymanual] ( buyer beware ) and that says use octane 77 . what's that then. somebody in here said best use only esso premium
also could i use 5w 30 fully synthetic . its not had an oil change in years . again somebody in here said they doubt the engine oil in mowers would ever really breakdown
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