Repost of MSPARKS oil analysis

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msparks
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posted June 25, 2002 09:10 PM
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Here are the numbers for my 5w50.

2100 on the oil
20100 on the truck

gly neg
water fuel Vis at 100C 18.7
soot NA
oxd, 10.0%
nox, 17.1%
FE 11
Cr 1
PB 13
CU 8
SN 0
Al 8
Ni 1
Ag 0
Mn 1
SI 18
B 17
Na 6
Mg 369
Ca 1500
Ba 0
P 767
Zn 1138
Mo 80
Ti 0
V 0
Cd 0

Filter used was a Fram Tough Guard
Also the oil was only in the truck 5 months.

I had a 92 ranger v-6 ran 20w50 most of the time.
Ran the 5w50 in the F150.

Then by doing alot of research and reading, that heavier is not better unless you are racing and your oil temps would dictate a heavier oil. See with higher oil temps the oil gets thiner. Say a 10w30 is 9.3 cSt at 100C well it may only be say 5.6 cSt at 121C/250F it might only be 5.6 a low 20 weight or even lower. Hence the reason for a heavy weight oil.


Hope this helps.

[ June 25, 2002, 09:52 PM: Message edited by: BOBISTHEOILGUY ]
 
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