chevor wrote:
Maybe I should start sampling my coolant. I already sample the oil.
Yup...there is a kit that looks like my high school chem test kit
Litmus paper is what it looks like to me
GWR RadStrips tm...One test strip for all radiator fluids! I'm not willing to engine oil analysis because that $28 bucks just about
pays for an oil change and filter. So why bother unless suspect something
is amiss
Ditto this litmus paper test...I just flush every other year
How does all this apply to the OP's topic...lots, as heat is one of
the killers of ICE's and Tires
Have been into thermal management since college and later when at
SunLabs where my teams invented 'solid state AC compressor',
'diamond foam' and a host of other patents
Heat management and mainly the rejection characteristics play huge
in ICE's and am keeping an eye on the current EcoBoost V6
Key is the long term condition (efficiency) of the cooling system
after it has aged and factored by both maintenance (schedule and
materials) and duty cycle. Towing is one of the most severe, even
higher than some racing conditions...as they don't have several tons
hooked up to their tail to drag around for hours and hours and days
and days at high throttle settings (and boost)
Reverse flow cooling systems was extremely interesting, but it came
and went in a flash. So there wasn't enough literature to read up on
Made sense, as the heat is generated at TDC's CC. Why aluminum heads
makes such good sense, but then the differing expansion rates between
aluminum and cast iron comes into play, but they have 'generally'
solved that. Liners a very similar issue(s) and some don't do well
like Caddies two piece aluminum block with cast iron liners in dad's STS
Since diesel fuel has 129,500 BTU's per gallon and gasoline has 114,000
BTU's per gallon, will have the higher energy fuel product more
BTU's in similar sized CC's
Factor in higher compression of the typical diesel to further
increase the potential heat developed in the CC
Another factor common today is forced fed ICE's. That then adds on
top of the above to generate even more heat in that CC
All it takes is for 'one' of the heat management/rejection components
or sub-systems to hick-up and/or degrade in performance...that will
then create a cascading series of failure events
High ultimate temps, high rates of temp change and ultimate temps
reached all contribute to degradation of OATs/HOATs/GO5's (GO5 is a
HOATs and is a non-GM product) into acidic globules. They are also
insulators in addition to acid etch/eat stuff
