dougbgt6 Posted August 19, 2015 Report Share Posted August 19, 2015 I recently changed my oil and filter. The old oil was Halfords 20/50 (Yes I know!) the new stuff, Millers classic 20/50. I've always had good oil pressure, if the gauge is to be believed, but it seems to have dropped by about 10 lbs through the range (hot, cold, idle and fast). Is that normal? Link to comment Share on other sites More sharing options...
Jezza Posted August 19, 2015 Report Share Posted August 19, 2015 Not sure about the pressure dropping, but I used Halfords classic oil in my last oil change. I got talking to the guy at the garage I took my car to recently to get the tracking done and he thoroughly recommended it and hadn't seen any issues with using in on any of the British classics he sees. Link to comment Share on other sites More sharing options...
dougbgt6 Posted August 19, 2015 Author Report Share Posted August 19, 2015 Someone suggested this is because the Millers has cleaning properties while the Halfords is purely a lubricating oil. But I'm not sure of the science involved. Link to comment Share on other sites More sharing options...
Pete Lewis Posted August 19, 2015 Report Share Posted August 19, 2015 Guess so long as its 40 -60 @2000rpm thats the only spec triumph give I guess its deemed ....Ok whater is on the tin any oily chemists out there ?.. pete Link to comment Share on other sites More sharing options...
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