formula shell 10w-30, 1861 mi, 99 f150 V6

[jorton]

Oil report is from Blackstone. I am checking for AF contamination. Used Exxon Superflow before this OCI. I did not change the oil when I took this sample. Blackstone suggested I "resample to monitor", and I "could run the oil longer if I wanted to".

code:

---

---

my UOA universal average
al 1 4
ca 1503 2052
cr 0 1
cu 1 5
fe 3 19
pb 0 4
mg 0 1
mo 35 59
phos 566 772
pot 1 2
si 8 15
na 19 28
sn 0 1
zn 685 952
vis@210 62.8
FP 375 fuel tr
af ? water 0.0
insol 0.2

1 quart of hd40 is mixed with the 10w-30. Antifreeze is Dex-cool.

I am also mixing a little marine 2 cycle oil in the gas tank.

Can you tell from this oil report if I need to replace the intake manifold gasket?

Thanks, Joe

 

[jorton]

I accidently forgot BORON which is 146. I was also a little mixed up on the element symbols.

manganese is 0
magnesium is 4

Na, potassium, si and insolubles all look too high to me for 1800 miles.

 

[rg144]

Could the Na be residual from the previous Exxon Superflow?

 

[Ray H]

What are you achieving with 2-cycle motor oil in the gasoline other than extra unburned HC loading of the catalytic converter?

 

[jorton]

Some folks in the "additives" forum are doing that for better fuel economy and I didn't know 2oz of oil per 10 gallons of gas would hurt the catalytic converter. 1:1 sounds like too much though.

Why is the flash point in my UOA so low?

After I checked the na levels in Superflo and Clean 5000 VOA(250 give or take), I'm a little more comfortable with my trucks 19ppm. I do think it's residual.