Shell Helix Ultra ect 5W30 How clean is engine oil? Test above 100°C
Shell Helix Ultra 5W30 C3 ECT unknown to me TBN.
The point scale: 1 - bad, 10 - well
Cleanliness oil (sludge): 6/10
Changing the color: 8/10
The cost of oil: 32.00 PLN / 1L
What shows the test?
The test shows how clean is really a oil. Does it have traces of sludge and oil resistance (additives) to change the color.
Why are some oils are darker than others?
Because of the additives. Each manufacturer in its composition has other additives that react differently to heat.