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  #11  
Old 04-07-2009, 07:00 AM
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What a drag, Matt! You've been plagued with repairs lately.
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  #12  
Old 04-07-2009, 08:56 AM
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I would definitely change the oil and filter, assuming you've cleaned all of the visible gook up first, and then drive it some more before I pulled the head.

Drive enough to get the oil good and warm before you drain it. Then about 5 seconds after it starts to drain, catch a sample of the oil. If you send it to Blackstone labs they will charge you $20 and tell if you have significant anti-freeze in your oil as well as be able to tell you how your motor is wearing based on other components found in the oil.

If all of the oil you drain out is milky or there is obviously large quantities of AF in the oil you can skip the oil analysis.

How does your anti-freeze look? Are there any globs of oil in it. Have you done the bubble test where you watch your over flow bottle with the engine running and warm to see if there are any bubbles in it?

There is lots of checking I would do before I tore it down again.
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  #13  
Old 04-07-2009, 05:34 PM
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Milkshake appearance on the underside of the filler cap (and even the PCV hose) can easily be condensation, especially from the up and down weather we've had lately. Check for milk shake on the dipstick too, quick and easy, and won't be subject to condensation like the cap and PCV system is.

More than a few very wise, experienced mechanics have counseled me to always check the easy stuff first before assuming the worst.

Taking those 2 front head bolts off has NEVER caused a problem for me. Heck, you have to take them off to R&R the air cleaner housing on an F. I wouldn't jump to conclusions.

Lastly, you can smell antifreeze in the exhaust when there is enough there.

I would suggest cleaning up the underside of the cap, driving her a bit and checking again. Changing the oil as was suggested isn't a terrible idea either. I would worry about HG or cracked head too, but check the easy stuff first before going through the time and expense of pulling the head. FWIW, with those 8 qts of oil, driving a bit, even with some coolant in there, won't hurt much in the short term if you really have an issue.
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  #14  
Old 04-07-2009, 06:40 PM
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Milky oil on the cap is from crappy oil (probably Pennzoil) holding water and getting whipped by the crankshaft. A lot of short trips compounds the issue as the trapped water cannot evaporate off as the oil never gets really hot.
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  #15  
Old 04-07-2009, 06:45 PM
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Quote:
Originally Posted by Rzeppa View Post
Milkshake appearance on the underside of the filler cap (and even the PCV hose) can easily be condensation, especially from the up and down weather we've had lately. Check for milk shake on the dipstick too, quick and easy, and won't be subject to condensation like the cap and PCV system is.

More than a few very wise, experienced mechanics have counseled me to always check the easy stuff first before assuming the worst.

Taking those 2 front head bolts off has NEVER caused a problem for me. Heck, you have to take them off to R&R the air cleaner housing on an F. I wouldn't jump to conclusions.

Lastly, you can smell antifreeze in the exhaust when there is enough there.

I would suggest cleaning up the underside of the cap, driving her a bit and checking again. Changing the oil as was suggested isn't a terrible idea either. I would worry about HG or cracked head too, but check the easy stuff first before going through the time and expense of pulling the head. FWIW, with those 8 qts of oil, driving a bit, even with some coolant in there, won't hurt much in the short term if you really have an issue.
I should have read Zepps post first....my bad. I agree with Jeff....change the oil and drive it and see if it does it again!
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  #16  
Old 04-07-2009, 07:26 PM
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Valvoline...

BTW OEM headgasket.

the check was done after about 1/2 hour of driving around trying to find a parts store, so the engine was pretty hot.
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  #17  
Old 04-11-2009, 05:52 PM
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try to source up a cooling system pressure tester from autozone or oreillys.. see if the system holds pressure(you can rent them).. you can also take off the rad cap off with the truck running, and see if there is pressure.. (ie compression leaking into the cooling, which will be very aparent from the large amount of bubbles) i doubt thats your problem though..if not odds are that you have a slight tear in the HeadGasket between the cyliender and oil passage.. the air flow from the compression will aerate the oil causing the milkshake.. same affect of a bad pcv. you could also pull the plugs and peek inside see if there are any sighns of antifreeze or un burned oil..
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  #18  
Old 04-11-2009, 07:41 PM
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You could drain the oil in a clean container and check it out... even put it back if it looks good.

I'd try everything before pulling the head.

Drew
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  #19  
Old 04-11-2009, 11:40 PM
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tru that.. pulling the head should be last resort
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  #20  
Old 04-12-2009, 10:54 PM
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Dang Matt, what a bummer...

Any signs of combustion in the coolant?

Does this coincide in any way with your lack of heat?
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