# Slow coolant leak **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** seville, cadillac\ **Created:** [May 14, 2009, 2:38pm UTC](https://community.cartalk.com/t/slow-coolant-leak/30460 "2009-05-14T14:38:41Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![trucker](https://avatars.discourse-cdn.com/v4/letter/t/ecae2f/32.png) [@trucker](https://community.cartalk.com/u/trucker)\ **Post date:** [May 14, 2009, 2:38pm UTC](https://community.cartalk.com/t/slow-coolant-leak/30460/1 "2009-05-14T14:38:41Z")
1997 Cadillac Seville, loosing coolant; it has been pressure checked, new water pump,flushed, new thermostat,new head gaskets. The car runs well 97,000 miles on it North star engine… Can any one help ---
**Author:** ![Whitey](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/whitey/32/24680_2.png) [@Whitey](https://community.cartalk.com/u/Whitey)\ **Post date:** [May 14, 2009, 2:47pm UTC](https://community.cartalk.com/t/slow-coolant-leak/30460/2 "2009-05-14T14:47:54Z")
You need to get the system pressure tested by a competent mechanic, not one that just swaps parts because he or she can’t find the leak. Chances are, you need a new radiator, but don’t just pay to get a new one until you know for sure. ---
**Author:** ![trucker](https://avatars.discourse-cdn.com/v4/letter/t/ecae2f/32.png) [@trucker](https://community.cartalk.com/u/trucker)\ **Post date:** [May 14, 2009, 3:04pm UTC](https://community.cartalk.com/t/slow-coolant-leak/30460/3 "2009-05-14T15:04:52Z")
I have only taken the car to a Cadillac garage and they pressured checked it and replaced the coolant some one said the coolant may be to thin and I may need a heavier weight one? ---
**Author:** ![Whitey](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/whitey/32/24680_2.png) [@Whitey](https://community.cartalk.com/u/Whitey)\ **Post date:** [May 14, 2009, 3:37pm UTC](https://community.cartalk.com/t/slow-coolant-leak/30460/4 "2009-05-14T15:37:00Z")
If you are really losing coolant and your Cadallac garage can’t find where it is going, it is time to get a second opinion. Heavier coolant? That is a new one. I didn’t know they came in different weights. I wonder if this might be the infamous Dexcool-head gasket issue. In any case, you need a second opinion from a better troubleshooter than your Cadillac garage. ---
**Author:** ![trucker](https://avatars.discourse-cdn.com/v4/letter/t/ecae2f/32.png) [@trucker](https://community.cartalk.com/u/trucker)\ **Post date:** [May 14, 2009, 3:47pm UTC](https://community.cartalk.com/t/slow-coolant-leak/30460/5 "2009-05-14T15:47:00Z")
tHANK YOU SO MUCH FOR ADDRESSING MY PROBLEM i WISH i WOULD HAVE ASKED BEFORE i PAID 3,000.00 FOR NEW HEAD GASKETS ---
**Author:** ![Beadsandbeads](https://avatars.discourse-cdn.com/v4/letter/b/c57346/32.png) [@Beadsandbeads](https://community.cartalk.com/u/Beadsandbeads)\ **Post date:** [May 15, 2009, 2:48am UTC](https://community.cartalk.com/t/slow-coolant-leak/30460/6 "2009-05-15T02:48:12Z")
Top three candidates, block plugs, coolant reservoir and water pump. It could be lots of thing, though. ---
**Author:** ![BustedKnuckles](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bustedknuckles/32/25_2.png) [@BustedKnuckles](https://community.cartalk.com/u/BustedKnuckles)\ **Post date:** [May 15, 2009, 9:36am UTC](https://community.cartalk.com/t/slow-coolant-leak/30460/7 "2009-05-15T09:36:57Z")
Just to add to Beadsandbeads, other culprits include heater hoses and the heater core. Heater core becomes suspect when there is a weird haze build-up on the windshield or funky sweet smell in the interior of the car.