Killer oil!

[Mad Goon]

Huh... I thought it was at a preset mileage... I changed my oil at 3,000 before the light came on and around 2000 more miles, BAM there goes the light..

What about the driver's habits? Frequent, short trips without allowing the car to reach operating temp could cause sludge buildup as well.. I know that a head gasket leak would answer a lot of this, but wouldn't the tops of those pistons also be clean with a slow amount of liquid(water) passing through(head gasket?) Carbon buildup there could also be answered with my statement as well...

This is pretty interesting though.. Who knows what the "lube technicians" did during those oil changes ... So many variables! x.x

[Hershey]

Originally Posted by Mad Goon

Huh... I thought it was at a preset mileage... I changed my oil at 3,000 before the light came on and around 2000 more miles, BAM there goes the light..

What about the driver's habits? Frequent, short trips without allowing the car to reach operating temp could cause sludge buildup as well.. I know that a head gasket leak would answer a lot of this, but wouldn't the tops of those pistons also be clean with a slow amount of liquid(water) passing through(head gasket?) Carbon buildup there could also be answered with my statement as well...

This is pretty interesting though.. Who knows what the "lube technicians" did during those oil changes ... So many variables! x.x

If it's a very fine internal leak most moisture probably would get burned off ( evaporate ) . So , could take a long time for it to accumulate internally . The only thing to most likely detect it early would be with a U.O.A. ( Used Oil Analysis ) . We may have to go that route .

[127.0.0.1]

Originally Posted by Hershey

If it's a very fine internal leak most moisture probably would get burned off ( evaporate ) . So , could take a long time for it to accumulate internally . The only thing to most likely detect it early would be with a U.O.A. ( Used Oil Analysis ) . We may have to go that route .

to detect a headgasket leak, you do a compression test on the
cylinders and a pressure test on the cooling system.

and use a block tester on the coolant to detect exhaust gasses

uoa is overkill, don't need one

[Mad Goon]

Originally Posted by Hershey

If it's a very fine internal leak most moisture probably would get burned off ( evaporate ) . So , could take a long time for it to accumulate internally . The only thing to most likely detect it early would be with a U.O.A. ( Used Oil Analysis ) . We may have to go that route .

Ah good point! Best of luck, would love to get to the bottom of this... Makes me a little wary of the old lady's car..