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Mitragorz · Joined: 30 Jun 2014 Posts: 27 Location: Manorville, NY

Simple question: Green or Orange?

1980 924 NA
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1980 924 N/A

PaulD_944S2 · Posted: Sun Aug 25, 2019 2:47 pm Post subject:

Neither, Porsche Pink!

Zerex G05 is good.

Dutch924-racer · Joined: 23 Jul 2007 Posts: 1081 Location: The Netherlands

G11, colour doesn't always say which product it is. G11 is mostly blue-green.
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937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller

morghen · Joined: 21 Jan 2005 Posts: 9095 Location: Romania

G12, i use G12. Its bright pink.
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Supercharger and EFI kits
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924RACR · Posted: Mon Aug 26, 2019 12:51 am Post subject:

I use orange...
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

Mitragorz · Joined: 30 Jun 2014 Posts: 27 Location: Manorville, NY

Thanks for those. I was mostly talking about the Prestone products, either the Orange Dexcool or the standard green stuff.

I'll be picking up some G-05 from Autozone this afternoon.
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1980 924 N/A

Carrera RSR · Joined: 08 Jan 2010 Posts: 2312 Location: Somerset, UK

Depends what the motor has had in it previously

MEG tends to be Blue or Green
OAT tends to be pink, orange or red

If you have previously used MEG do not use OAT unless the previous MEG is 100% flushed. You cannot risk the two mixing unless you want gloop blocking’s your cooling channels.
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1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
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Mitragorz · Joined: 30 Jun 2014 Posts: 27 Location: Manorville, NY

Mitragorz · Joined: 30 Jun 2014 Posts: 27 Location: Manorville, NY

Ok, so I'm flushing it anyway.

I likely can't get the heater core bc the climate control in the car doesn't work. The fan switch is probably bad and two of the three sliders have jumped the tracks. She isn't a show car.

So what I did now is pull the skid plate and pull out the rad drain plug. I'm feeding tap water through it via the reservoir. When that comes out clean, I'll fill it with tap, run the car, bleed, drain, refill, run, bleed, drain... rinse and repeat until the water comes out clear. Then I'll run 4 or so gallons of distilled through it, then refill with G05 and bleed.

This *should* preclude the need to pull the block drains. The car is 40 years old, the fewer bolts I risk breaking or stripping the better.

Better safe than sorry and, to be honest, it's not difficult or time-consuming to do it right. The only thing that worries me is not emptying the heater core.
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1980 924 N/A