supertech 15w-40 CI-4, 1989 F250 7.3L

[1 FMF]

walmart supertech 15w-40 oil, CI-4 rated, not the old CH-4 stuff. No oil added, about a quart burned over the interval.
1989 Ford F-250, 7.3L IDI International with aftermarket ATS turbo (has exhaust leak == no boost most of time). Running a K&N air filter.

Mileage on oil is 2373 miles, time on oil was 6 months almost to the day (from October till April). Truck odometer at 136000. We had a cold winter too, one day truck wouldn't start because batteries were frozen.

code:

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Blackstone Labs

sample univ avg

Aluminum 1 3

Chromium 1 2

iron 21 69

copper 3 6

lead 7 9

tin 0 2

moly 0 24

nickel 1 1

manganese 0 1

silver 0 0

titanium 0 0

potassium 10 1

boron 3 130

silicon 5 9

sodium 9 13

calcium 2757 2618

magnesium 21 233

phosphorus 951 1080

zinc 1108 1238

barium 0 0



TBN 7.7

Viscosity 74.8 SUS (14.3 cSt)

flash 450F

fuel < 0.5%

insolubles 0.3



no water/antifreeze

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running delvac 1300 15w-40 again.

[ May 04, 2004, 12:14 AM: Message edited by: 1 FMF ]

 

[Alan]

I don't know much about diesel UOA's but it looks pretty good.Not bad for the price.

 

[csandste]

ST oils sometimes get a bad rap for low additive packs. Usually I don't find much credence in these comments-- close examination shows more than the subjective comments indicate. This stuff DOES look a bit light, however, it seems to be performing pretty well. Low mileage but tough weather for a 15w40. TBN certainly looks good--better than my 10w30, know diesels are different.