sahtuning2000 Posted February 7, 2009 Share Posted February 7, 2009 Did a service 2 weeks ago,and used 10/40 engine oil,now the oil light flickers on idle,never done it before and i,am sure i,ve only used 10/40 on previous services is this the correct grade?? Link to comment Share on other sites More sharing options...
Glenn Posted February 7, 2009 Share Posted February 7, 2009 20/50 is recommended apparently.Might be safer to give it a change - that light is just going to upset you.Hopefully no long term ill effects (I've got 15/40 in mine so my fingers are crossed for you!!)Cheers,Glenn Link to comment Share on other sites More sharing options...
sahtuning2000 Posted February 7, 2009 Author Share Posted February 7, 2009 Hmmmmmm,i might get it back tommorrow,i,ve leant it to a friend for 2 weeks,so i best get it changed ASAP.... Link to comment Share on other sites More sharing options...
mikeyb Posted February 7, 2009 Share Posted February 7, 2009 10/40 way to thin, swap for 20/50. Flickering oil light could be due to pressure switch though - do you have a gauge? Link to comment Share on other sites More sharing options...
Greeks Posted February 8, 2009 Share Posted February 8, 2009 I tried 10/40 in my old engine once ... made it sound like I'd thrown a load of ball bearings in the rocker cover. Link to comment Share on other sites More sharing options...
willows40 Posted February 8, 2009 Share Posted February 8, 2009 i put 10/40 in my 2000 last year and the oil light flicked on tick over changed it back to 20/50 and no sign of oil light since.cheers andy Link to comment Share on other sites More sharing options...
shedmonkey Posted February 8, 2009 Share Posted February 8, 2009 I had that problem when I used duckhams classic! (about 8 years ago on a high milage engine about 100k) changed back to a non duckhams 20-50 and it was fine ,but also worth putting a new OPS on and cleaning up the pressure relief vlave etc ,that engine chugged around for another 20,000miles Link to comment Share on other sites More sharing options...
Deleted User Posted February 8, 2009 Share Posted February 8, 2009 Many a classic car has had it's engine wrecked by using a 'superior' modern 10/40 oil.Don't do it!!! The clearance in older engines are much looser than a modern engine and they need that thick 20/50 oil. Link to comment Share on other sites More sharing options...
Fuzzy Harris Posted February 8, 2009 Share Posted February 8, 2009 Duchams 20/50 every time, not to expensive either. Link to comment Share on other sites More sharing options...
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