Muscles

Hey guys how can I clean out the old nasty engine oil out, or is there some way to flush it out clean? It's because I got my 89 5.0 GT a few months ago and the 3 times I have changed the oil It comes out black black black, very natsy and dirty, it seems like the previous owner did not care for it and so the oil gets contaminated every time I change it from the old gunk in there. Thanks</P>


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mdvaldosta

You can get some stuff in a silver can called motor flush, some peple use marval mystery oil, I would say use the motor flush (parts store) as per the directions, be sure to change the oil when its hot, and use good oil (not Quaker State or Pennsoil).</P>

89muscle

use castrol its the only stuff i use for all 3 of my cars. and make sure you have a magnetic drain plug.

Muscles

Thanks for the tip guys, hey how about synthetic oil? Recommend or not?</P>


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vfast

no not put that motor flush or any other solvent and it will likely stop up your pick up screen on the oil pump..for 1 thing if your oil is black then it's working....change the oil after it's empty put in a new qt of oil with the drain both plugs out to get what's left at the bottom of them pan. fill up with a good quailty oil,not syth. then about 500,& 1000 changed the oil filter..see if it cleans up. if it does good were on the right track if not pour a bottle of either BGProducts moa or the Lucas engine cleaner..these 2 disolve slugde...motor flush doesn't ..after flushing the engine do the above again after 500 and if it dirty change to mobil 1 and find a k/n or amsoil fiter..good luck

Muscles

Thanks, and what wieght is recommended with an engine reaching 135K I use 10/30 currently

vfast

10/30 is good...