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Change oil twice after timing cover leak (coolant) #4463150
07/18/17 06:08 PM
07/18/17 06:08 PM
Joined: Oct 2015
Posts: 440
MN
TmanP Offline OP
TmanP  Offline OP
Joined: Oct 2015
Posts: 440
MN
In May, I had to replace the timing cover gasket (and water pump) on my 3.8 due to a coolant leak. My independent mechanic told me that I needed to have him change the oil after this, due to possible coolant contamination. So, I had him do that. Now, the VWB has 750 miles on it and I'm wondering if I need to re-change it ( I was thinking about just siphoning out 4 quarts and leaving the filter) or if it's okay as is. The coolant wasn't necessarily in the oil but there was a chance, as I understand it, that coolant and oil mixed (although the leak was external), and I had no "milkshake" oil. So, I was just wondering whether it should be good, or if there's any value in a change.
Thanks.


2012 Toyota Camry 2.5 30,000 mi
2015 Chevy Silverado LT Z71 5.3 V8 30,000 mi
2010 Toyota Sienna 3.5 V6 150,000 mi
Re: Change oil twice after timing cover leak (coolant) [Re: TmanP] #4463153
07/18/17 06:12 PM
07/18/17 06:12 PM
Joined: Nov 2009
Posts: 1,844
Ontario Canada
cjcride Online content
cjcride  Online Content
Joined: Nov 2009
Posts: 1,844
Ontario Canada
You are fine. No to change again till next regular change.

Last edited by cjcride; 07/18/17 06:12 PM.
Re: Change oil twice after timing cover leak (coolant) [Re: TmanP] #4463175
07/18/17 06:46 PM
07/18/17 06:46 PM
Joined: Dec 2006
Posts: 911
midwest
JamesBond Offline
JamesBond  Offline
Joined: Dec 2006
Posts: 911
midwest
For $20 and 1/2 an hour you can change the oil and not have to worry.

Re: Change oil twice after timing cover leak (coolant) [Re: JamesBond] #4463179
07/18/17 06:51 PM
07/18/17 06:51 PM
Joined: Jul 2005
Posts: 30,424
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 30,424
NY
Originally Posted By: JamesBond
For $20 and 1/2 an hour you can change the oil and not have to worry.


That's what I'd do.


God Bless Our Troops

Re: Change oil twice after timing cover leak (coolant) [Re: TmanP] #4463195
07/18/17 07:05 PM
07/18/17 07:05 PM
Joined: Jan 2009
Posts: 6,179
New England
gathermewool Online content
gathermewool  Online Content
Joined: Jan 2009
Posts: 6,179
New England
It's not Amsoil or some other expensive oil. I'd change the oil and leave the filter. If you've got a Fumoto valve installed it should take all of 5 minutes.

If you'd have to pay someone to do this, I'd wait.


'14 Forester XT FA20DIT (Cobb Stage 1)
Edge 0W-40 + FU filter
'15 Legacy FB25 (OEM Stage, uh, neg. 7?)
Edge 0W-20 + FU filter
Re: Change oil twice after timing cover leak (coolant) [Re: TmanP] #4463239
07/18/17 07:59 PM
07/18/17 07:59 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
If the mechanic drained the radiator before pulling the timing chain cover, I don't see the issue. Before pulling my intake manifold, I drained the radiator which drained everything else with it. I kept the oil in it because I had some very expensive Valvoline 5W-40 in it with low mileage.

Re: Change oil twice after timing cover leak (coolant) [Re: TmanP] #4463305
07/18/17 08:54 PM
07/18/17 08:54 PM
Joined: Sep 2006
Posts: 115
Idaho
CorvairGeek Offline
CorvairGeek  Offline
Joined: Sep 2006
Posts: 115
Idaho
So much coolant is still trapped in the block with everything removed, (unless you remove the block drains) I would change the oil (cheap insurance). I took the wet/dry vacuum and sucked out coolant from the ports just so it wouldn't weep during this job.




You can still see the coolant standing in the rear of the block. With the main oil galley through the timing cover (left side holes below coolant), it is good to be extra careful with the Buick engine. I was paranoid and even removed the oil pan (shockingly easy).

Last edited by CorvairGeek; 07/18/17 08:55 PM.

Jerry

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