Fireman049 Posted October 23, 2014 Report Share Posted October 23, 2014 Which is the best running in oil additive for my rebuilt engine? I shall be using Morris' 20/50 "Magnol" low detergent oil. Tom. Quote Link to post Share on other sites
john.r.davies Posted October 23, 2014 Report Share Posted October 23, 2014 (edited) Tom, I hadn't heard of Morris Lubricants so I looked them up - seem to be agricultural specialists - and how much their product is. It's not expensive, but then you're going to throw it away after the first 500 miles or so, so little point in all that detergent. You might as well use a cheap supermarket oil, half the cost, which lacks detergent but also ZINC, to protect high pressure areas, so mix into it some zinc additive. I use Lucas (not that one) Break-In Additive, but there must be others. Lucas also do a 'break-in oil' but it's nearly twice as expensive as yer Morris' and a lot more than cheapo plus Zinc additive. John Edited October 23, 2014 by john.r.davies Quote Link to post Share on other sites
Guest ntc Posted October 23, 2014 Report Share Posted October 23, 2014 Which is the best running in oil additive for my rebuilt engine? I shall be using Morris' 20/50 "Magnol" low detergent oil. Tom. Tom Use search it is all there, Quote Link to post Share on other sites
pfenlon Posted October 23, 2014 Report Share Posted October 23, 2014 Which engine Tom? really your engine man should have given you the best advice if you have had some machining done. My TR4 engine is new, but a rebuild going back 10 years or more, sounds good pulls well but I will change the filter and Classic oil after 250 then 500 miles. A proper engine man is John at J@E in Rossendale, let me know if you need more info. Quote Link to post Share on other sites
Fireman049 Posted October 23, 2014 Author Report Share Posted October 23, 2014 Hi 'yall ~ We used Morris' engine oils in all our fire engines. These engines were obviously worked very hard under very demanding conditions in all weathers. We never experienced any problems with them. The Coventry Climax 'Featherweight' pumps (Featherweight?? It took four firemen to carry then!!) would be started from cold and the throttle slammed down to maximum revs. inorder to created suction with no ill effects ~ ever! Pete ~ My engine is a 2.2L (TR3A). I was my own 'engine man'! I rebuilt TR engines from 1955 to 1963. Thank you all for your advice. Tom. Quote Link to post Share on other sites
Alec Pringle Posted October 23, 2014 Report Share Posted October 23, 2014 Hi Tom, as you know, Morris produce damn good lubricants. Magnol is a good all round farm oil that you can use for any damn thing agricultural or plant, and it's 15/30 low viscosity for cold weather. It's not ideal for higher revving road engines though. Morris do make a jolly good running-in oil of the traditional sort, straight 30 with the right additive mix for old cars, and it's well favoured with our local classic and sporting engine builders. I think it's just simply called 'running-in oil'. I'd go for a gallon of that for starters, and just top up with whatever if it isn't quite enough. It's worth the extra for the first 500 miles, you've spent enough on the engine - ha'porth of tar ! Cheers Alec Quote Link to post Share on other sites
Dave Larnder Posted October 24, 2014 Report Share Posted October 24, 2014 Tom I used Penrite Running In oil from Moss. Since then I have used Castrol GTX with ZDDP additive for flat tappet engines. ZDDP comes in a 14ml bottle per 5 litres of oil. Dave Quote Link to post Share on other sites
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