Like you I've used it since the 80's on my bicycles and still use Tri-Flow. It still smells, feels and tastes the same as it did in '84.
I own a bicycle shop and run USPSA matches and have tried every miracle lube I can think of on guns and bikes. None of them are as smooth cycling and durable as Tri-Flow.
I have used it personally in temps from -8F to +108F and have never had a problem with viscosity (I compared -8 Tri-flow to room temp and it was unchanged to my layman's observation).
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