Toyota Hi-Lux '94 2.8 Diesel 2WD
287,200Km - Turbo installed at 108,000Km
Penzoil 15W40 Diesel LL upto 225,000Km from new, then Penrite 15W50 Diesel till now. Cheapest filter I can get on the day. Always changed at 5K Km.
Still runs like new. Nil usage between fills and has often done long...
That was my original thoughts, that's why I wanted some other thoughts. How much is just settling and and how much 'separation' (for use of a better word)?
I did a change a few days ago and used all my odd bottles of oil laying around. They had been hanging around for a while. One bottle was dated 2006, two from 2008 and 2 litres left from the last change - although this bottle was dated 2009.
The question is at the bottom of the 2006 & 2008...
Thanks for the article JHZR2.
It explains a lot! Even thought it applies manly to gear oil it seems to suggest the sulphur parts of moly additives are non reactive.
I have started adding half a tin of Liqui Moly (correct spelling) at my oil changes and have seen much less iron on my magnet...
This is my first post, I hope this hasn’t been gone over before!
I am wondering on the effect of Molybdenum Disulfide or Titanium Disulfide on the brass present in motors.
I have been reading a bit on GL 4 and GL 5 gear oils and the difference in sulphur levels affecting gear boxes with brass...