There are 2 x O.P switches on this engine, a brown 0.3bar which off memory switches open circuit at pressure over 0.3bar & is on the end of the head. & a grey 0.9 bar switch on top of the cast oil filter head which switches to closed circuit at a maximum of 1.1 bar. Also Check the alternator charge rate - charging issues can set the oil warning off on these at increased revs. Slipping alternator drive belt etc.... |
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