During Radiator flush I found suspected engine oil inside,mixed with cool fluid. on 2000 Chevrolet Astro

What could be the issue? is it worth to repair, truck run smooth,no somoke,rear differential serviced with new breakes disc,drums etc. please advise.

by in Chicago, IL on April 08, 2013
2 answers 4 comments
ANSWER by on April 08, 2013
was the fluid brown or straw berry colored. could be trans fluid or oil depending on color
COMMENT by on April 08, 2013
thanks for your answer, The cooland flushed was the orange color,the mix of fluid is brown with "tan" like tarr texture.
COMMENT by on April 08, 2013
could be intake gasket if you never overheated it. clean system out completely and monitor it to see if it happens agian or seek diag for which it is. headgasket or intake leak
COMMENT by on June 04, 2013
Thanks all for your tips & IDEAS, I took my best bet on a damaged radiator internal leak / damaged Water pump diagnostic.I didnt had a misfire on the engine & drained all the fluids again, changed the pump & washed (yes with dish soap my cooland passages in the block LOL) replaced with new hoses, thermostat,radiator & water pump, I almost drove another 3000 miles on this van and the issue isnt there no more! it took a 12 pack & a good friend willing to help to get it done.
ANSWER by on April 08, 2013
Trans. fluid and engine oil have coolers that run inside the rad. Prob. one of these is leaking into the rad. I dont think it is an engine problem!!
COMMENT by on April 12, 2013
Guys, I took the waterpump, and the radiator, also flushed the Engine oil. Engine Oil & Trans Oil are clean, Radiator is full of sludge like brown light chocolate mix. Should I put a new radiator? water pump?