ok, i know, oil, not again you all say
but, ive been doin some more readin on it, and this time i decided to have a good look at Mobil 1 0W-40
i requested the data sheets from Mobil and ive got the important viscosity figures, and im very surprised at them to be honest
even though it has a 0W rating, its viscosity at 40c is thicker than that of a 5W-30, and very similar to a 10W-40 !!!
now once its up to temp, its basically the same viscosity as a 10W-40, and based on the figures i have its only a bit thinner than a fully synthetic 20W-50, which would normally be considered a fairly thick oil
so i went out to Halfords today and bought a litre of it, added about 500ml to my car, which is about a sixth of total capacity, i know its not gonna make much difference, but i honestly did feel a difference, my mrs even said about 10 minutes later, that the car seemed smoother, so if she can notice then it must be !
im gonna give it a go on my next oil change, bit worried about oil usage as my car is approachin 90k, but ill see how it goes
just thought i would share my findings with you
based on the data sheet i got from Mobil ive totally changed my ideas on thinner oils, well, in Mobil 1s case anywayz