Bruce Kreft

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  • Bruce Kreft
    Bruce Kreft on How do you drain the oil on a HU725AWD/BBC mower with a...public

    Eugene,

    Back in the mid 1980's a manufacturer raised the top compression ring closer to the deck of the piston and changed the timing one (1) degree in an attempt to meet some emissions requirements. What they did not realize at the time was this action had some very bad consequences. The emissions were met, but at the cost of the engine oil. It turned out that this seemingly insignificant change resulted in higher concentration of soot to be forced into the crankcase of which the oil had to suspend. Long story short, it could not, which means the oil companies now had to reformulate their oils to meet the new engine demands.

    Today we see lower tension on the piston rings in an attempt to increase fuel economy via less parasitic drag. The downside is that now we are seeing increased contaminants being introduced to the crankcase in the form of blow by.

    I was always taught that the oil is the life blood of the engine and you cannot take it too lightly or it will come back to haunt you big time.

    Bruce

  • Bruce Kreft
    Bruce Kreft on How do you drain the oil on a HU725AWD/BBC mower with a...public

    Eugene,

    Briggs is claiming the oil does not need to be changed in some of their engines. Well, they are repeating history. In the sixties and seventies a Briggs engine was the best you could own. Then they got sloppy and did not care and started producing junk. Imports started getting better and ate their lunch. Briggs wised up and improved their product line, but a lot of the damage had been done. Now they come up with this do not need to change the oil campaign. Oil does three (3) major functions: it cools, it lubricates and it holds in suspension contaminants which are removed during an oil change. Oil also has additives that improve lubricity and features called for by the design engineers. Oil does not wear out, but the additive package needs to be restored and the contaminants removed.

  • Bruce Kreft
    Bruce Kreft on How do you drain the oil on a HU725AWD/BBC mower with a...public

    I guess I will not be purchasing any Briggs engines. Kawasaki and Honda still have drain plugs. How in the world can you perform good maintenance using the procedures they publish?

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