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ATP-205 works!

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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mecheng
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Year and Model: 1998 Volvo S70 T5
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ATP-205 works!

Post by mecheng »

Very impressed, after one short drive the atp 205 cured my valve stem seal leak! I would get a short puff of smoke upon start up, not any more.
It only took one short trip for it to work. Highly recommended, it could prevent a valve from burning and gets my highest recommendation.
1998 Volvo S70 T5 - SE - 240km - Sold July 2018
1997 Volvo 850 GLT - 190km
Boost is my drug of choice

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dosbricks
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Year and Model: '96 855, '98 S70
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Post by dosbricks »

I totally agree that of all the plethora of moose pee additives out there, this stuff is actually effective for softening/restoring seals.

I put 1oz. in the power steering and the rest in the crankcase of the S70. Now, thanks to you, I'm reminded/convinced I need to get a bottle for my 855.
'98 S70, 230k, purchased new in '98
'96 855 GLT, 163k, purchased lightly used in '99
Onceuponatime RIP '69 Shelby GT500 w/7.0 liter

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Clemens
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Post by Clemens »

Somewhere I read that atp 205 only softens rubber and according to atp ruins plastic and teflon seals. Are there any plastic or Teflon seals in an 850 or S/V 70?
Summer: 1996 855 R
Winter: 1994 855 T5M
Donor: 1995 854 10V

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misha
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Post by misha »

Valve stem seals on our cars should be made of teflon as far as i know.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

mecheng
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Post by mecheng »

I thought the valve stem seals are nitrile; anyways mine were leaking so what harm could I really do. As far as I am aware, our engines don't use plastic seals and didn't think they used Teflon. I never read that about it harming seals anyway.

I have been driving it for a couple months and it is perfect. Read the reviews on Amazon, it has cured many valve stem seal leaks.
I let the car sit for a week trying to see if any valve would leak past the seal, started the car up, zero smoke.

https://www.amazon.com/ATP-AT-205-Re-Sea ... 1_1&sr=8-1
1998 Volvo S70 T5 - SE - 240km - Sold July 2018
1997 Volvo 850 GLT - 190km
Boost is my drug of choice

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erikv11
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Post by erikv11 »

I don't think the valve seals are teflon, haven't heard that one before, interesting comment. The ones I bought looked like some kind of rubber-like compound, e.g. nitrile, FWIW.

I also like this stuff, have used it a couple times.
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 197k
'07 XC70, black, 205k
'07 XC70, willow green, 212k
'99 Camry V6 :shock: 153k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k

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sleddriver
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Post by sleddriver »

Mecheng,

Glad to hear it worked for you.

Just did a PS flush & fill & reboot. Added 1.5oz to the Valvoline Maxlife ATF syn. I refilled the system with. Hoping it will stop the rack from leaking. Read really good things about AT-205 + I was able to find it locally.
1998 V70 T5 226,808 miles. Original Owner.
M1 10W-30 HM

mecheng
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Post by mecheng »

sleddriver wrote:Mecheng,

Glad to hear it worked for you.

Just did a PS flush & fill & reboot. Added 1.5oz to the Valvoline Maxlife ATF syn. I refilled the system with. Hoping it will stop the rack from leaking. Read really good things about AT-205 + I was able to find it locally.
If it doesn't work, it could be because you added too little.

3oz is required for PS leaks

good luck
1998 Volvo S70 T5 - SE - 240km - Sold July 2018
1997 Volvo 850 GLT - 190km
Boost is my drug of choice

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sleddriver
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Post by sleddriver »

Really? Where did you hear that?

I based my dosage on what I found from an ATP video: 1.5oz/quart of fluid. This was the suggested dose for an AT. Could be different for PS. If so, I'm interested in hearing your information
1998 V70 T5 226,808 miles. Original Owner.
M1 10W-30 HM

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sleddriver
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Post by sleddriver »

Update: Just got off the phone with ATP support re: 205. He said 2-3oz/qrt. So I'll top up with a bit more.
1998 V70 T5 226,808 miles. Original Owner.
M1 10W-30 HM

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