oil analysis questions

[Keith B.]

I had a oil analysis done from my sour engine in my Chevelle. I got the results back and was looking to see if the were was any fuel in the oil. for the results it came back as a 5. it was done by ALS Laboratory Group.

[Duke W.]

Re: oil analysis questions

The best answer should be from the lab that did the tests.

Duke

[Dick W.]

Re: oil analysis questions

Post the results. Fuel dilution can be expressed in several ways

[Keith B.]

Re: oil analysis questions

Dick I am not sure what you want but here it goes:
xFe 30
xCr 1
xPb 4
xCu 12
xSn 2
xA1 5
xNi <1
xAg <1
Xti <1
xV <1
xSi 6
xNa <1
xK <5
xMg 62
xCa 2942
xP 1091
xZn 1275
xMo 167
xB 12
xBa <1
xVIS100 8.8
xTBN 4.8
xMN <2
CoolANT no
Water <0.05
soot 0.3
Fuel 5

[Dick W.]

Re: oil analysis questions

Dick I am not sure what you want but here it goes:
xFe 30
xCr 1
xPb 4
xCu 12
xSn 2
xA1 5
xNi <1
xAg <1
Xti <1
xV <1
xSi 6
xNa <1
xK <5
xMg 62
xCa 2942
xP 1091
xZn 1275
xMo 167
xB 12
xBa <1
xVIS100 8.8
xTBN 4.8
xMN <2
CoolANT no
Water <0.05
soot 0.3
Fuel 5

I am guessing 5% which indicates to me that either the car is running rich or it is not being run enough at a time to get the choke open.

Search for oil sample and see the samples that I posted a month or so back.

[Keith B.]

Re: oil analysis questions

I am guessing 5% which indicates to me that either the car is running rich or it is not being run enough at a time to get the choke open.

Search for oil sample and see the samples that I posted a month or so back.

the engine builder who assembled my engine and disassembled after the failure said the cause of the failure was fuel wash. so would this analysis back up his claim?

[Dick W.]

Re: oil analysis questions

the engine builder who assembled my engine and disassembled after the failure said the cause of the failure was fuel wash. so would this analysis back up his claim?

Fuel wash will definitely screw up the world. Scored cylinder walls, bearings, etc. It is possible that you have a fuel pump diaphragm with a small pin hole in it.

[Keith B.]

Re: oil analysis questions

I will say the fuel pump was band new two years ago. maybe I got a bad one. thanks for all your help.

[Dick W.]

Re: oil analysis questions

I will say the fuel pump was band new two years ago. maybe I got a bad one. thanks for all your help.

Keith, if the pump was NOS or NORS, it is possible that it is not compatible with ethanol fuels, which have propensity for attacking rubber.

[Keith B.]

Re: oil analysis questions

It was a service replacent Delco from the dealer