Somebody that knows about blotter tests

[johnd]

I usually do a blotter spot test every other tank of gas to see what is what. This car is a Chevy 350 that is driven twice a day, ordinarily, just long enough to warm up and probably once a week for longer. Between the first and second sample, i went on a road trip and drove at highway speed for about 4 hours. More or less 200 mi. Does it appear to you that the inner ring of solids actually decreased or is it just an optical illusion because the oil is a little darker.

I guess I should say that the first number is the car mileage and the second number is the oil mileage. The oil is Havoline and the filter is a Frantz.

 

[Gary Allan]

Are you left handed, like me?

I think the ring is smaller due to a smaller amount of oil being used. The ring is smaller. The proportions look right.

 

[johnd]

quote:

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Are you left handed, like me?

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No, I just have lousy handwriting. Does the oil in this sample look pretty good for 1600 mi.?

 

[Gary Allan]

Looks good to me ...near brand new.

 

[Carpenter58]

I have been look for this info what paper do you use?

 

[johnd]

Old business cards. They are about 100 lb. weight and are very consistent in terms of composition.