my 1999 passat is gushing coolant out behind the engine/ above the transmission.

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i believe its the gasket on cts gonna put new one in to see if it works. taking in and out is a major pain

Ty. The gasket was fine. The flange was warped. $12 part.

What is this called? It's next to the coolant temperature sensor housing.

Nothing cut off. The whole pic came through

when I try to screw it in, it isn't catching. It was covered by a thin metal sheet bolted over it. Is it supposed to screw in or does the metal sheet hold it in? The sheet was nearly torn off from the burst of coolant that came out next/under it

Nothing after market. I removed it to get at cts housing. It's on passenger side nearest air box. Nothing connects to it as far as I know. I'll try to get a picture.

When I took it out. The Reason I took it out is to get at the broken bolt. I was able to get vice grips on it but it was stripping and figured it would break again. Using as a stud to hold it in the proper spot would be better to try first.

I Will be trying the g12 if there is no more leaks. I It Looks like it has had only water for about 10 years. It's a 1999. I bought last year with only 37000 miles on it. I Have learned a lot about sludge and turbos since. Every thing on car is original or warranty work only. Changed to 710n dv and pcv and got oil to stop blowing out oil cap and some turbo lines. Imo on sludge is too much slow/easy driving. Run the turbo hard regularly. It's supposed to be used. Make sure to hit at least 6k rpm. I believe this clears out sludge and if some is sucked through at a high rpm it will grind it through to small pebbles. the first oil filter I changed was the original manufacturers size. Vw changed to larger oil filter to combat sludge issues around 12 years ago. I've

Changed the oil ten times since March, about 11000 miles. It still comes out black with small black pebbles after only 1000 miles. I've used 6+ bottles of sea foam in crank case to help. It Is staying a little cleaner, longer each change. :smiley:my first car was a 1987 gti:smiley: 1.8 engines are great. This sight has been very helpful with old threads covering the issues I've had so far. Could do without the spam to email tho:grin:

I believe car is from Europe and has the blue square coolant temperature sensor. Other 1999s and later have green round sensor.

I was thinking it's euro cuz it's got original German spare tire and vw battery. Don't Really know. If what I read is correct be switched mid year 1999 from blue square to green round on all models. The green one is listed as compatible with my car and all other 99s on some parts sites. Thanks for info on head. Would not have noticed.

At 37000 miles 15 years old. I believe most mileage came earlier on. I bought from rich foreign homeowners in kahala area on Oahu. People who own homes there live somewhere else during non winter months. Battery is for sure original. It's dated. I'm Just using it to get around. I stopped sea foam, it only can help so much. Waiting longer between each change now. It was a little rusty in color inside cooling system. People in Hawaii mostly use water because temperatures are not extreme enough to require anti freezes. With lack of regular servicing and used a couple months a year I don't think they cared or knew enough.

Anything to know about aph head difference than the aeb original? Good bad same. I haven't found any opinions on that elsewhere

Again, the oil filter I first replaced was the smaller original manufacturers specs. I'll check exact year they changed specs. I scraped sludge out of engines oil cap opening with my finger. I knew nothing of sludge issues until I owned it.