andrewbridget Posted March 2, 2020 Report Share Posted March 2, 2020 Hi. I have a Perkins Prima 65 engine. For the life of me I cannot find out what engine oil to use. There are so many varients and I do not wish to clog her up . 2003 Perkins. Apparently they were originally built for the meastro van . Has written 15/40 on my engine book but then crossed it out so..... any advice appreciated. Andrew. Link to comment Share on other sites More sharing options...
Alan de Enfield Posted March 2, 2020 Report Share Posted March 2, 2020 (edited) 14 minutes ago, andrewbridget said: any advice appreciated. Page 32 in the manual : 10W30 or 15W40 would be your best 'all round' grade for the UK Edited March 2, 2020 by Alan de Enfield Link to comment Share on other sites More sharing options...
OldGoat Posted March 2, 2020 Report Share Posted March 2, 2020 Subject to correction by others.... 10/30 is usually semi-synthetic and Beta Marine said no-way for my 1903. 15/40 is mineral and what they recommend - methinks that applies for other makes of a similar engine. Probably cheaper as well? Link to comment Share on other sites More sharing options...
Alan de Enfield Posted March 2, 2020 Report Share Posted March 2, 2020 (edited) 11 minutes ago, OldGoat said: Subject to correction by others.... 10/30 is usually semi-synthetic and Beta Marine said no-way for my 1903. 15/40 is mineral and what they recommend - methinks that applies for other makes of a similar engine. Probably cheaper as well? The API CD/SE tells you what to use, C = use in Diesel engines D = the level of cleaning agent in the oil Oils are 'backwards compatible' so where it says 'not less than CD/ SE in the manual you could use CF / SF, SG etc, but not 'lower' than CD/SE Edited March 2, 2020 by Alan de Enfield Link to comment Share on other sites More sharing options...
Iain_S Posted March 2, 2020 Report Share Posted March 2, 2020 ... and if you find CD hard to get hold of, CF will do the job, and is usually cheaper. Oil spec. sheet quoted above does say "not less than the specification" Link to comment Share on other sites More sharing options...
andrewbridget Posted March 2, 2020 Author Report Share Posted March 2, 2020 Wow. That's exactly the info I needed. My manual does not have that page Alan but you alongside Ian. Thank You very much. And your right. I could not find the CD grading. Was on ebay but needed it asap. I had bought semi synthetic and quickly returned it for the mineral oil 15/40. Thank goodness. Best wishes to you guys. A. Link to comment Share on other sites More sharing options...
Alan de Enfield Posted March 2, 2020 Report Share Posted March 2, 2020 (edited) 56 minutes ago, andrewbridget said: My manual does not have that page Alan Oil capacity 9 litres (depending on which dipstick is used as different applications have different dipsticks) Edited March 2, 2020 by Alan de Enfield Link to comment Share on other sites More sharing options...
Alan de Enfield Posted March 2, 2020 Report Share Posted March 2, 2020 What sort of boat do you have - Its a big engine for an Inland waterway boat Engine Number of cylinders................................................................................................................................................................................... 4 Cylinder arrangement..........................................................................................................................................................................In line Cycle..........................................................................................................................................................................................Four stroke Induction system: M65 engine..................................................................................................................................................................... Naturally aspirated M85T engine...........................................................................................................................................................................Turbocharged Combustion system...............................................................................................................................................................Direct injection Nominal bore....................................................................................................................................................................97,0 mm (3.82 in) Stroke.............................................................................................................................................................................100,0 mm (3.94 in) Compression ratio.............................................................................................................................................................................. 17.5:1 Cubic capacity................................................................................................................................................................. 2,9 litres (183 in3) Firing order..................................................................................................................................................................................... 1, 3, 4, 2 Valve tip clearances (cold)..............................................................................................................................................0,35 mm (0.014 in) Lubricating oil pressure (maximum engine speed and normal engine temperature) ................................................................................................... 420 kPa (61 lbf/in2) 4,3 kgf/cm2 Capacity of a typical lubricating oil system: (1) - includes oil filter..........................................................................................................................................................9,4 litres (16.5 pints) - sump only......................................................................................................................................................................9 litres (15.8 pints) If you PM me your email address I'll send you the manual. Link to comment Share on other sites More sharing options...
alan_fincher Posted March 2, 2020 Report Share Posted March 2, 2020 5 hours ago, Alan de Enfield said: The API CD/SE tells you what to use, C = use in Diesel engines D = the level of cleaning agent in the oil Oils are 'backwards compatible' so where it says 'not less than CD/ SE in the manual you could use CF / SF, SG etc, but not 'lower' than CD/SE Whilst it probably doesn't matter in this particular case, I would be wary of that final statement. It is very definitely the case that in many engines, such as old Listers, where API CC is specified that you should not use a "higher" specification like API CF. This is precisely why outfits such as Morris deliberately blend oils to the "obsoleted" spec. If it were perfectly acceptable in al cases to substitute a "higher" spec, they wouldn't bother to be manufacturing the "lower" one. Link to comment Share on other sites More sharing options...
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