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1992 Cadillac Deville

Tiny
SEAN03
  • MEMBER
  • 1992 CADILLAC DEVILLE
  • 4.9L
  • V8
  • FWD
  • AUTOMATIC
  • 142,000 MILES
Hi I have a 1992 Cadillac Deville. Their is nothing on the a/c system it leaked out. Tomorrow I am going to put nitrogen in the a/c system but I am not sure how much I can put in it. I was thinking maybe 20-30 pounds at the most. What do you think. I do have r12 a 30lb bottle. I also bout some red tek 12a that is a sealer basically. It is just like hot shot. I know hot shot works very well my dad uses it in ac systems when r12 was phased out. He would fix the leak then recharge it with hotshot. Thanks.
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Monday, June 2nd, 2014 AT 6:32 PM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
I tneeds to beleak checked first and 20-30 punds it is to much unless you are talking about pressure. It needs freoon to leak check electronically anyhow.
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Tuesday, June 3rd, 2014 AT 5:54 AM
Tiny
SEAN03
  • MEMBER
  • 523 POSTS
Yeah sorry I was typing fast last night. I meant to put 20-30 for pressure. Is that enough or should I do 50 for pressure. Thanks.
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Tuesday, June 3rd, 2014 AT 5:53 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
50 would be better but if you don't have a leak checker it's not going to tell you anything because it can be a very slow leak. That's is why you need to have it tested electronically and you can't with nitrogen
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Wednesday, June 4th, 2014 AT 6:44 AM

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