so stealth...... at some point i read, "its not good to flush, exchange is better" or close to it....... . agree? and what are (pellets)....?
it is the belief of this writer that the easy and perfectly fine procedure is to drain whatever
amount comes out, refill with a 50/50 coolant mix (with distilled water) .. i dont even try
to get all of the "old" coolant out. there is not point to that, except more profit for the shop.
you do that every 24 months and you should not have any corrosion or scaling problems with
any, and i mean ANY, cooling system of any Detroit engine. Alum or iron, or any combo of that.
THAT is what i practice and have been for many years. My days of "flushing" came to
an end when i stopped and thought about the ACID in the chemical flushes.
Chemical flushes are for engines in poor shape, mostly to clean out the badly corroded
passages, not for clean and well maintained engines. Between my cars, all of them in excees
of 100,000 miles, NOT ONE FLUSH .. simply drain and refill every other year.
I would not flush the coolant system any more than i would flush the crankcase.
Pellets .. i add one to every gallon of refill .. other have different opinions, i just tell you
what i do with my vehicles that are ran well beyond the normal speeds and conditions,
year after year. Either very high speeds, heavy traffic manuvering, towing, mountain driving.
Often in 110F heat, sometimes closer to 120F (Baja).
A/C always running once the ambient hits 85F.
The A/C or AMBIENT CONTROL always OFF, below that.
I dont like to run the compressor full time, there is no point to be wearing down the compressor
like most everyone i know that has ambient control ON all of the 365 days / year - every car i got
has operational A/C - the OEM original.
I also do run the A/C compressor once a month, even in winter time - keeps the seals and parts
well oiled and flexible.
AND, for those that question that, I lived in Syracuse and Schenectady also.
Same coolant maint i used there .. never, never a problem.