Difference between coolant and plain water

[nfssaad]

this engine is started up by compressed air at 30 bar

[nfssaad]

one piston weighs a friggin 190kg made of cast iron!

[jamaljan_pk]

I use FUCHs diluted coolant (i think 40%) for my mehran and alto. Is that good enough or are there any other better then this ?

[Xulfiqar]

OOOOOh so thats why theres a coolant preheater in the system.... i couldnt figure out the reason for it when studying the process and instrumentation diagrams.

If you study some F1 engine specs or witness how its started up - it also requires preheated coolant.

technically when cold an F1 engine is siezed - the clearances open up only when warm coolant is pumped through it - then hot oil is pressurefed in the ports and finally the engine started. The tolerances are insanely tight.

anyway - on these big ladies you need to spend the MONIES to keep them happy, they are very picky on what they get. Consider yourself lucky you are not experiencing a detroit diesel 2 stroke, They leak so much oil all the time that if at any time its not leaking oil the first engineer hits the kill switch - because the engine has ACTUALLY RUN OUT OF OIL.

[Xulfiqar]

I use FUCHs diluted coolant (i think 40%) for my mehran and alto. Is that good enough or are there any other better then this ?

good choice

[Titanium]

Can we have some visuals of those huge vartsillas..

Thanks for fulfilling my farmaish.. Size does matter.

[suresh123]

HI,
The most obvious difference is the freezing point, if you live in a cold climate you'll crack your engine block if you have only water in there. But coolant also has a much higher [I]boiling point than water, and can therefore hold a lot more heat without boiling over.

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[/I]Hyundai I20

[spectra]

@xulfiqar I am using this Liqui Moly in my 3C-TE https://www.pakwheels.com/forums/sale/193326-liqui-moly-radiator-coolant Is it suitable for diesels? Asking this after reading that silica thing.

[Anyone]

what is the fuel consumption of this engine?sahi phakay marta ho ga diesel ke...1mint mn kitny liter diesel enjoy krta he?

[nfssaad]

i will update on fuel consumption when i go through operations training.. it uses very very heavy furnace oil... or bunker fuel as its known... the fuel has to be kept heated or it will freeze.. and goes through several washing and purifying steps before being injected into engine.

[Xulfiqar]

what is the fuel consumption of this engine?sahi phakay marta ho ga diesel ke...1mint mn kitny liter diesel enjoy krta he?

When its making money, you wont be counting beans for CNGing it.

btw - saad, once you get the training, do go through the cost of downtime part too. It will be quite shocking.

[Xulfiqar]

@Xulfiqar I am using this Liqui Moly in my 3C-TE https://www.pakwheels.com/forums/sale/193326-liqui-moly-radiator-coolant Is it suitable for diesels? Asking this after reading that silica thing.

contact the manufacturer, the silica packet was usually placed in EU engines mostly. However they are also placed in japanese diesels running in EU.

[pwuser162557941033]

This should absolutely be a stickied post. It's 2023, and it's extremely frustrating doing any sort of cooling system work where mechanics insist on using "meetha pani" instead of a proper coolant mixture.

To add to this, here are some pictures off the internet of water pumps used with and without coolant. Note how the impeller blades are completely destroyed on the latter.

Coolant not only protects against the corrosive effects of pressurized, boiling water and ice formation in freezing weather, it also lubricates the water pump.

[Xulfiqar]

people in Pakistan also forget that coolant also needs to be replaced following the manufacturer recommendation. e.g. toyota pink first change is about 200,000 kms - and then 100,000 kms thereon.

same for suzuki long life etc. etc. - furthermore, most people buy the cheapest and low cost whatever coolant they can get their hands on, e.g. some people buy a 40% premix bottle because its 60% cost of the concentrate bottle - forgetting that they paid more for the premix.

[nfssaad]

just ordered some caltex coolant...

2 liters of caltex concentrate, is about the same price as 4 liter premix coolants.

used petromin before, bad experience, first time i saw rust in the system.
before that used ZIC super A for a long time, had no issues with that.