ltoolio

That subject sounds more disgusting than I meant

So, drove the "new" shark to my brother's house so he could take it for a ride. Pull up to his house, smoke everywhere coming from under the hood.

Pop the hood and there is green coolant spewing from the coolant reservoir cap.

It was apparently loose before (I can tell by how it was originally aligned) so no underlying issues.

I filled the reservoir to above low with some Peak 50\50, green, that my brother had so I could get home. Do you think I should do a flush \replace so I have a single coolant type in?

I don't know what the PO had put in, but I'm assuming it wasn't Peak 50\50.

Another day, another (minor) adventure...

Avar928

I would do a coolant flush anyways to replace that old coolant that's been in there for who knows how long if maintenance was neglected. Doesn't hurt to flush the system. Fill her back up with Zerex G05, it's the good stuff for our cars.

Mrmerlin

I would not recommend to do any flushing of the system unless your prepared to remove the heads and swap in new HGs.
Reason being the HGs have deteriorated to the point that rinsing them off, with a cleaning type mixture may also carry away the deposits that are keeping them from leaking.

That said you may already have a failed HG given the boiling over episode.

So to get the cooling system back in order,
replace these parts if you dont know how old they are . Or they are older than 5 YO
coolant bottle cap
thermostat, and its rear seal if you have one. starts in mid 84
heater control valve and the short hose... always do them together.

Drain the block drains, you will get about 2.3 gallons total from the block,
and the rest from the radiator.

Refill with 4 gallons total .
two gal .of coolant and two gal, of distilled water from the market

SeanR

Stan is 100% correct, I'd start off simple.

Drain the radiator and pull the block plugs to get as much coolant out as ya can. Reinstall plugs and before you fill it back up, pull the thermostat housing putting in a new thermostat and inner/outer seals. Put a new heater valve and short hose, fill it up and then put on a new cap and go drive it.

ltoolio

Sean - looking at 928srus right now for the replacement parts...do I go with the 75C or the 83C on the thermostat?

Also - do you have the the heater value, short hose and seals?

I'm pretty sure the cap is good. It looks very, very new. Shiny, the insides look good. Should I get one for $8 anyways?

And as always - thanks guys.

SeanR

Stick with the '83c stat, I've not noticed any advantage to going with the 75c. I usually replace my cap every time I do a pump job, it's cheap insurance.

Also, don't rely on Rogers website for parts, he prefers to talk to the customer on the phone or via e-mail.

ltoolio

Just got confirmation from the PO via text that he's changed all of the items above within the last 2 years. Given that, should I just do the drain / fill?

robot808

Hey guys,

This was my car that Itoolio just bought. It was well cared for. It has had a recent TB/WP job, in which the coolant had been drained, and all above mentioned parts were changed.

IIRC, I used the 75C thermostat because it was recommended for the supercharger installation.

Ryan, may I suggest putting the car info in your signature. It'll help these guys give you better advice.

Mrmerlin

yes drain it all out then refill

robot808

On the bright side, those drain plugs should come out nice and easy.

ltoolio

And also on the bright side - I get to learn a bit more.

SeanR

On the dark side, you get to learn how to take a shower in coolant. Those block drains suck buttholes. Have an escape plan ready, once they are loose, use as much arm as you can to remove them and then plan on getting way out of the way.

Randy V

Better to flush than not.

dr bob

My coolant drain protocol does the block drains first, leaving the reservoir cap on, then do the easier radiator drain. Leaving the cap on means there will be a restricted path for air to fill the top of the system as coolant drains out the bottom. So much smaller/slower shower underneath. It's still a mess, but at least it doesn't splash around as much while draining.

depami

Doing water pump on 86.5 now. What is best coolant to use?