R50/53 R53 Oil Consumption
#51
Mine was using a decent amount of oil too. It has 204k miles and it modded . I put in a new pcv valve and it has made a huge change in oil consumption . It now has needed none and I'm 2.5k into this oil change . I also sealed up a few vacuum leaks and installed an oil catch can ,which has been catching some blow by. 2.5k miles I had a measurable amount in it.
#52
#54
Yup. I really do think it curbed a good amount of the consumption. No way I am running longer than 3-4k service intervals, it came out super dark this time around! To be fair this has it's fair share of high RPM driving (I just can't help myself :D) but I really don't want to imagine what it would look like after 15k.
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ssoliman (11-07-2020)
#55
6th Gear
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A good read: http://www.positivespin.us/MotorOil.htms
#56
It's never a good idea to go to a thicker viscosity for egine oil, it only serves in creating engine wear....thicker oil has less ability to lubricate at startup which is when 90% of engine wear occurs. Oil is cheaper than replacing an engine.....
A good read: http://www.positivespin.us/MotorOil.htms
A good read: http://www.positivespin.us/MotorOil.htms
Directly from the owner's manual, Page 109:
"Viscosity is the oilflow rating as established in SAE classes.
Approved oils are in SAE classes 5W-40 and 5W-30.
These oils can be used at all ambient tem- peratures."
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ssoliman (11-09-2020)
#57
6th Gear
iTrader: (10)
Viscosity is a liquid’s resistance to flow.....The first number 5W, relates only to the flow characteristics in COLD weather regions.
The longer it takes for the oil to pass through, the higher the SAE code is assigned due to the higher viscosity, which means the 5w40 has a higher viscosity ( resistence) than 5w30 = 5w40 has more resistence to flow = increased engine wear after warmed up....
The longer it takes for the oil to pass through, the higher the SAE code is assigned due to the higher viscosity, which means the 5w40 has a higher viscosity ( resistence) than 5w30 = 5w40 has more resistence to flow = increased engine wear after warmed up....
#58
Viscosity is a liquid’s resistance to flow.....The first number 5W, relates only to the flow characteristics in COLD weather regions.
The longer it takes for the oil to pass through, the higher the SAE code is assigned due to the higher viscosity, which means the 5w40 has a higher viscosity ( resistence) than 5w30 = 5w40 has more resistence to flow = increased engine wear after warmed up....
The longer it takes for the oil to pass through, the higher the SAE code is assigned due to the higher viscosity, which means the 5w40 has a higher viscosity ( resistence) than 5w30 = 5w40 has more resistence to flow = increased engine wear after warmed up....
I've actually experienced this over a few different cars when the oil flows freely when warmed up (think cold slow moving oil versus hot oil that moves freely), a lower viscosity will tend to move faster and breakdown quickly when compared to a higher viscosity. If you were to choose a very viscous oil then I suppose you would have engine wear as the oil pump would not be able to move the oil through the engine adequately, but the Mini is rated for a 5w40. With this in mind the 5w40 fits my needs best with the abuse the oil gets in Georgia. The choice is really up to you but I do not think that running a 5w40 over a 5w30 will cause increased engine wear. If anything, it will reduce wear when hot since the complete valve train is still getting adequate flow and has proper oil filming.
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