I remember that there was a paper that showed PG to be less damaging to an engine but can't find it or remember who put it out.
Does anyone have any information? Thanks.
Does anyone have any information? Thanks.
propylene glycol engine damage paper?
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Do you mean less damaging to the bearings if a coolant leak occurs?
Probably the company that sells the product.
I found the following on a website:
Quote:
According to Arco Chemical Company (Document OP88-791-7.5M "The Facts about Propylene Glycol Antifreeze"), "PG-based antifreeze has shown reduced risk of bearing damage if introduced into the oil by head gasket leakage or failure. A Detroit Diesel 8V92T engine was run on a dynamometer for one hour at full horsepower (432 HP) with 8 percent [propylene glycol antifreeze] poured directly into the crankcase . . . no excessive wear was shown on bearings run with the 8 percent PG coolant when the engine was torn down." In contrast, "one-half to one percent of ethylene glycol in the oil causes rapid bearing failure, resulting in the shutdown of the engine."
Quote:
According to Arco Chemical Company (Document OP88-791-7.5M "The Facts about Propylene Glycol Antifreeze"), "PG-based antifreeze has shown reduced risk of bearing damage if introduced into the oil by head gasket leakage or failure. A Detroit Diesel 8V92T engine was run on a dynamometer for one hour at full horsepower (432 HP) with 8 percent [propylene glycol antifreeze] poured directly into the crankcase . . . no excessive wear was shown on bearings run with the 8 percent PG coolant when the engine was torn down." In contrast, "one-half to one percent of ethylene glycol in the oil causes rapid bearing failure, resulting in the shutdown of the engine."
Trynew, that is the one. Thanks.
Originally Posted By: BuickGN
I've got way too much experience with blown headgaskets and coolant in the oil. That stuff seems to eat away the bearings even while the engine is off.
What stuff? The propylene glycol.
I've got way too much experience with blown headgaskets and coolant in the oil. That stuff seems to eat away the bearings even while the engine is off.
What stuff? The propylene glycol.
Something I found:
Quote:
An important feature unique to STA-CLEAN ANTIFREEZE is that IT WILL NOT HARM BEARINGS and ruin an engine if the coolant accidentally leaks into the crankcase. NO OTHER PG OR EG ANTIFREEZE CLAIMS THIS BENEFIT. The costs saved by this benefit alone pays for the cost of the antifreeze.
http://www.stacleanantifreeze.com/info.html
Quote:
An important feature unique to STA-CLEAN ANTIFREEZE is that IT WILL NOT HARM BEARINGS and ruin an engine if the coolant accidentally leaks into the crankcase. NO OTHER PG OR EG ANTIFREEZE CLAIMS THIS BENEFIT. The costs saved by this benefit alone pays for the cost of the antifreeze.
http://www.stacleanantifreeze.com/info.html
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