recent sample listed to the left
engine has about 55,000 km on it
The starting viscosity should have been about 9.3 cSt @100C, so it thickened up a bit. I wanted to see if one could fill with a thin oil at the beginning of winter, and have it thicken up automatically, in time for summer. Its viscosity index stayed high, so I suppose it might still qualify as a 0w-xx oil.
Does anyone know how to interpret the Wearcheck particle count graphs? The graph from this time looks identical to the one from last time, too.
The engine makes the piston slap noise in winter, and I wanted to see if the pistons were shedding any aluminium.
There was lots of magnetic powder on my drain plug magnet.
Oxidation might be the limiting factor for extended use here, since TBN is still quite good.
I drained this stuff, and filled with a 5w20/5w30 mixture of a brand that begins with the letter R.
[ June 23, 2004, 12:10 AM: Message edited by: oilyriser ]
engine has about 55,000 km on it
The oil was a mix of 2qt 0w30 and 2L 0w20. Filter was Supertech 3593, and it's ADB valve worked well for the entire time. I had to retighten it once to stop a slow leak.code:
2004/06/13, 2003/09/25
Mobil 1 0w20/0w30 mix 11123km, 7926km Tech2000 10w30
Dec-Jun, Jul-Oct
Fe 12 5.3
Cr 1.4 0.8
Ni 0 0
Ti 0 0
Ag 0 0.3
Al 6.4 2.8
Pb 1.6 0
Cu 1.9 3.0
Sn 0 0
Si 11 9.9
Na 5.7 0
K 0 0
B 133 3.0
Ba 0.2 0.4
Mo 67 1.2
Mg 29 11
Ca 2709 1969
P 771 850
Zn 1009 970
S 1938 3052
Mn 77 116
V 0 0
Fuel -- 0
Gly -- neg
Oxi 82 42
Nit 63 31
Sul 73 52
TBN 5.22 4.40
Kv40 52.8
Kv100 10.2 10.4
VI 185 --
H2O neg neg
The starting viscosity should have been about 9.3 cSt @100C, so it thickened up a bit. I wanted to see if one could fill with a thin oil at the beginning of winter, and have it thicken up automatically, in time for summer. Its viscosity index stayed high, so I suppose it might still qualify as a 0w-xx oil.
Does anyone know how to interpret the Wearcheck particle count graphs? The graph from this time looks identical to the one from last time, too.
The engine makes the piston slap noise in winter, and I wanted to see if the pistons were shedding any aluminium.
There was lots of magnetic powder on my drain plug magnet.
Oxidation might be the limiting factor for extended use here, since TBN is still quite good.
I drained this stuff, and filled with a 5w20/5w30 mixture of a brand that begins with the letter R.
[ June 23, 2004, 12:10 AM: Message edited by: oilyriser ]