Engine Knocking Disco 2003
#11
12-18-2011, 08:48 PM
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12-18-2011, 10:55 PM
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#14
12-18-2011, 11:51 PM
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#15
12-19-2011, 03:51 AM
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#16
12-19-2011, 04:19 AM
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No the brand of oil won't matter for short term use (national brands, etc.), that only controls the "additives" in the oil that alter the cleaning ability somewhat over a long period of continued use.
What color is the oil on the dip stick? If it is red, they put in automatic transmission fluid by mistake, and you will have a valid claim. ATF is much thinner than motor oil, and high detergent. Sometimes people use it as an engine flush. In Detroit test labs, they use it to accelerate wear on an engine being worked on.
Overfilled is interesting. The oil level in the pan is highest when engine is not running, cold. But even then, it is below the level of the bottom of the crankshaft lobes. If 50% more oil was in there, seems like you would have had sluggish performance with crank touching a liquid. You would have noticed a performance change after the oil change to proper level. You would have noticed this on the dip stick on any routine inspection of the truck (weekly is a good rule of thumb).
A bad sign of overfill would be coolant leaking into oil from a head gasket problem. Oil drainers may not have seen coolant in oil (milky look) because they don't stand there and watch it, they open the drain and go do something else. On the other hand, not exactly sure how they determined that they got 9.6 quarts out of it, and certainly there is no 3.5 quart above normal mark on the dip stick.
What color is the oil on the dip stick? If it is red, they put in automatic transmission fluid by mistake, and you will have a valid claim. ATF is much thinner than motor oil, and high detergent. Sometimes people use it as an engine flush. In Detroit test labs, they use it to accelerate wear on an engine being worked on.
Overfilled is interesting. The oil level in the pan is highest when engine is not running, cold. But even then, it is below the level of the bottom of the crankshaft lobes. If 50% more oil was in there, seems like you would have had sluggish performance with crank touching a liquid. You would have noticed a performance change after the oil change to proper level. You would have noticed this on the dip stick on any routine inspection of the truck (weekly is a good rule of thumb).
A bad sign of overfill would be coolant leaking into oil from a head gasket problem. Oil drainers may not have seen coolant in oil (milky look) because they don't stand there and watch it, they open the drain and go do something else. On the other hand, not exactly sure how they determined that they got 9.6 quarts out of it, and certainly there is no 3.5 quart above normal mark on the dip stick.
#17
12-19-2011, 06:54 PM
It sounds to me like what he is saying is that when the dealer first got the truck the engine was over filled with oil.
Then they changed the oil and plugs.
He bought it, drove for 2,000 miles and then this happened.
Either the shop did something wrong or the engine was on its way out when he bought it but the problem had been masked in some way, possibly by the original seller.
Then they changed the oil and plugs.
He bought it, drove for 2,000 miles and then this happened.
Either the shop did something wrong or the engine was on its way out when he bought it but the problem had been masked in some way, possibly by the original seller.
#18
12-19-2011, 07:31 PM
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