speedy69 Posted February 20, 2013 Share Posted February 20, 2013 Why are you persisting in perpetrating this lie? Someone who does not know any better may take heed of your rubbish and damage their car. Which oil company do you work for Fred? Link to comment Share on other sites More sharing options...
truman Posted February 20, 2013 Share Posted February 20, 2013 Which oil company do you work for Fred? And which engine repairers do you work for? Link to comment Share on other sites More sharing options...
frededwards Posted February 20, 2013 Share Posted February 20, 2013 Which oil company do you work for Fred? I don’t, but having been involved in motorsport and engine development since the mid-eighties does mean I have some degree of knowledge regarding lubricants. Upon what background is your “knowledge” based? Link to comment Share on other sites More sharing options...
lil-minx92 Posted February 20, 2013 Share Posted February 20, 2013 The OP's opened a can of oily worms here... I did read once that a test was done where engines that had an oil change every 1000 miles (or so) were compared to engines that did 100000 on the same oil and there was little difference in wear Link to comment Share on other sites More sharing options...
mr_arc Posted February 20, 2013 Share Posted February 20, 2013 I did read once that a test was done where engines that had an oil change every 1000 miles (or so) were compared to engines that did 100000 on the same oil and there was little difference in wear That's not what is being discussed though. You need the correct viscosity of oil. If an engine is designed to use 0w40 and you put something like 20w60 in it - then it'll cause problems as the oil will never circulate properly. Similarly if you use an oil that is thinner than spec then it's likely to leak past seals inside the engine (most likely the oil control rings, and get burnt by the engine) To say that any oil will do is just showing speedy69's complete lack of knowledge. Link to comment Share on other sites More sharing options...
alchresearch Posted February 20, 2013 Share Posted February 20, 2013 This makes for very interesting reading (especially the pictures), a case study of an engine which suffers from turbo failures - all from poor servicing and incorrect or poor quality oil. http://www.assuredperformance.ie/assets/images/Presentation-1.6-hdi-carbo-issues.pdf So, unless you want your engine to end up as a case study, don't heed Speedy's advice. Link to comment Share on other sites More sharing options...
frededwards Posted February 20, 2013 Share Posted February 20, 2013 The OP's opened a can of oily worms here... I did read once that a test was done where engines that had an oil change every 1000 miles (or so) were compared to engines that did 100000 on the same oil and there was little difference in wear That may have reported, but anyone that has ever stripped a high mileage engine down will tell you that it is simply not the case. Our current race engines put appreciable wear upon their main and big-end bearings within the four and a half hour service intervals. Link to comment Share on other sites More sharing options...
Mecky Posted February 20, 2013 Share Posted February 20, 2013 I remember back in the 70s when a well-known brand of motor oil nearly collapsed because of its magnetic problem. Link to comment Share on other sites More sharing options...
frededwards Posted February 20, 2013 Share Posted February 20, 2013 That's not what is being discussed though. You need the correct viscosity of oil. If an engine is designed to use 0w40 and you put something like 20w60 in it - then it'll cause problems as the oil will never circulate properly. Similarly if you use an oil that is thinner than spec then it's likely to leak past seals inside the engine (most likely the oil control rings, and get burnt by the engine) To say that any oil will do is just showing speedy69's complete lack of knowledge. Correct. In addition, if an engine is designed specifically for 0w40, there will be increased wear from cold because the 20w60 will be thicker (i.e. 20w) an will not penetrate the tighter clearances that necessitate the 0w specification oil. If the engine gets hot, there will also be increased wear, but this is because the oil will thin more and the film strength will break down. ---------- Post added 20-02-2013 at 11:26 ---------- I remember back in the 70s when a well-known brand of motor oil nearly collapsed because of its magnetic problem. I have no idea what you are on about. Would you care to expand? There is no way a hydrocarbon oil can have significant magnetic properties regarding it's application in an engine. Link to comment Share on other sites More sharing options...
mylo_chan Posted February 20, 2013 Author Share Posted February 20, 2013 The OP's opened a can of oily worms here... I did read once that a test was done where engines that had an oil change every 1000 miles (or so) were compared to engines that did 100000 on the same oil and there was little difference in wear ooppppsss!! ---------- Post added 20-02-2013 at 20:35 ---------- thanks for all your help people. but me being a car numpty poured some oil in and at the same time some went down the side of the engine and some oil is now sitting on the tray under the engine. have i just cocked it all up? will this cause any problems? i am definitely not a car guy Link to comment Share on other sites More sharing options...
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