Coolant help Sonata 2.5

Your dealership probably got the most junior helper to “drain and fill the coolant” as they know customer doesnt know.

The correct way is to use 3 gallons coolant, one to flush out the old stuff with hoses removed, then two to fill up the rest. In reality they should have a coolant exchange machine in the dealership but as its Pakistan they wont have it because saith sb franchise owner needs all his money.

Anyway. If kia/hyundai dealer is selling zic green coolant over parts counter they are more stupid than an intoxicated heroinchi. The zic coolant is a hybrid oat with silicated salts (like the old green from the 80s) mixing that with a japanese origin phosphated salts coolant causes precipitation of the coolant mix which then becomes corrosive and abrasive too.

Tl;dr - dont let morons do their “saainsdaani on your car because in the end you will be financing that saainsdaani”

Are they assuming people will believe them when they say zic is korean, hyundai is korean, hence aik hi baat hai.

As I mentioned in the Sonata Owners club, an Ustaad sahab was also trying to sell me a battery by saying kay sir hum har Sonata mei yehi daal rahay. Dimensions are wrong phir Ustaad sahab jugaar kartay hain.
I hate to say this but even the basic new cars are difficult to maintain sometimes because of these Siaasatdaans.

better is to get another pack of toyota pink coolant premix long life 50/50 gallon box (3.78 Litres). drain the current one and fill in the new one. just to be sure that all previous coolant has been flushed you can follow the procedure detailed by Xulfiqar. however if u just flush and fill in new pack i think it should suffice anyway

Sir the honda coolant is also light green whereas all the toyotas I have driven were having pink coolant.

Honda light green is old LLC P-HOAT coolant. (also called type1) - its not regular oldschool IAT stuff, dont mix them together.

Honda Atlas in Pakistan is using green type 2 coolant (ethylene glycol based) in their cars.

I once flushed the green coolant and refilled new toyota LLC pink (50/50 Premix) in Reborn R18. worked best no issues ever AL HAMD U LILLAH.

The honda type2 and toyota sllc pink are the same item in different shades, good thing about toyota is that their coolant isnt affected by UV unlike the blue honda.

Problem in flushing and filling with sllc is that you need to waste a bit of coolant as its a premix otherwise if you waterflush and fill the system, you will end up with a lower concentration than 50%

And sllc pink is extremely sensitive to hard water, it can precipitate out with hard and chlorinated water.

BASF Glysantin G48 is miscible with G05 and a bit with G40 only. It is also compatible a bit with "light silicated" new formula oldschool american IAT coolant.

If that civic was my car and was packed with rust, I would citric clean it first mildly (aluminium stuff cleans easy) to not greatly affect the corroded waterpump inside. Then refill with caltex/havoline as its easiest to get and use.

the caltex/havoline product is actually GM dexcool OAT with 2 ingredients of the recipe missing otherwise chevron would need to pay GM for the name. Its fantastic stuff to be honest but has one caveat. Unlike the japanese P-HOAT and european S-HOAT products, OAT coolant relies on keeping the entire systems walls wet for protection and that too requires about 10,000 kms of service for the antioxidants and passive additives to fully take effect.

While the other salted coolants, P-HOAT, S-HOAT work almost immediately like the old IAT stuff, they go in and coat the metal surfaces with a sacrificial layer which is replenished by the coolant itself and goes stale as it ages. This is why when you see a GM product engine disassembled the coolant passages are literally shiny squeaky clean like a brand new item, while neglected german and asian origin engines have hard deposits.

This is why when you see a leak on dexcool filled systems you see them as a black oil leak, the black is actually dust and dirt accumulating on the slick residue left behind. While on the salted coolants you see crystal formation at the leak site (bright neelum blue crystal on Honda, ruby like pink/red on Toyota and on G48 you see whitish powdered blue salt deposits, while on G05 and G40 you see white deposits like you see on a hard water faucet)