[urq] Antifreeze in oil

Djdawson2 at aol.com Djdawson2 at aol.com
Wed Mar 10 19:05:23 EST 2004


Andrew,
Yes, you likely have a failing HG.  There are a couple different failure 
possibilities...  There can be a leak into a combustion chamber, resulting in 
burned AF... the sweet smell, or there can be a leak into an oil passage... or 
both.

Many times, a leak into an oil passage can cause a sort of yellowish buildup 
on the bottom side of your oil cap.  But this isn't always true.  The easiest 
(and weirdest) way to tell for sure, is to actually taste your oil.  Yep... 
sounds weird, but you'll know very quickly, and you can always wipe your tongue 
off.  If there is AF in your oil, you will get a taste very similar to the 
smell of burning AF.  A very small amount of oil on your fingertip will tell the 
tale.

A combustion chamber leak can often escalate to an extreme.  Worst case is 
cylinder filling after shutdown... hydrolock.  The other possibility is major 
pressurization of your cooling system resulting from combustion pressure and 
boost.

You likely have at least a combustion chamber leak, and that should be tended 
to.  You will likely have AF in your oil as well.  Since you're burning AF at 
fire up, AF is certainly getting into a cylinder.  When the engine is shut 
down, the AF will accumulate in the cylinder, slowly leak past the rings, and 
into your oil pan.
HTH,
Dave in CO


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