Just had the head gaskets done 100 miles ago. I noticed the other day that my temps were starting to swing a little bit. Seeing the expansion tank was low, I bled the system again. Truck ran noticeably cooler and temps were consistent.

Couple of days later, same thing. temps started to fluctuate via UltraGauge. Checked the coolant tank and it was low again.

Hoses were not hard. Coolant did not smell like oil or exhaust. Checked the oil filler cap and there was green sludge.

Took it back to my shop and they are saying it is possibly a slipped liner. They are a good shop but not rover specific. So, from my reading here and elsewhere this sounds more like a front cover issue not slipped liners.

Wouldn't I be getting other symptoms with a slipped liner? Knocking, ticking and misfires?

Truck is running strong and I usually drive 100 miles or so per day in it. Not a lot short trips.

Forgot to mention that I did the water pump as well.

Thanks,

 

I don't have personal experience with liner slippage, jenuflect.... Father, son, Holy Ghost. But I have read that a slipped liner can make a pretty distinct noise.

 

Pressure test the cooling system, one of head bolts could have cracked the block treads, & its leaking coolant via water jacket into the engine but very little at a time, & since you do long drives (100 miles), & engine gets to operating temp & stays there long enough it boils off the coolant you don't get milky oil, that's just my first observation from what you said,
(Liner will not slip with a small crack right away& maybe never if it stays a small crack, & not necessarily combustion gasses will get to coolant from that small crack,),,
I hope what I said is not the case & it just has a small leak somewhere outside that can be easily fixed,

 

So your shop did the head gaskets and the water pump but did not pull the front cover and do an oil pump and timing chain at the same time?

 

Don't think it's a slipped liner this early in the game...

And it's only been 100 miles.

Rebleed, wipe out the gunk, and keep driving. There's been times I've rebled 3 times a week...and then nothing for 6 months.

 

I can't remember ever reading that a slipped liner lead to coolant leaking into the oil. In fact, I can't remember ever reading that a slipped liner actually caused damage. I'm sure eventually something would go wring, but it would take time.

I'd be worried about the front cover, and I'd be worried they screwed up torquing the head gaskets.

I think a pressure test is a good idea, and if it passes I'd wipe the cap out out, bleed the system, and watch it like a hawk. I'll add that several people, including myself, have trucks that always bleed themselves down an inch or two below the full line, and then stay there.

 

If my understanding is correct, a slipped liner would have a distinct noise, usually after warm up and I would have coolant getting into a cylinder.

Is this right? Or at least normally how this happens?

 

This is my understanding as well.

Thanks to everyone for the quick replies.

 

Someone on another board, LROnly, started a post about "which engine should I...?" Type of thing and within gives his tale of experiencing slipped liner or block crack with 2 or 3 successive motors. He could tell you all about it if you really want some first-hand knowledge

 

With a slipped sleeve you'd have a very noticeable ticking once warmed up. Also you can get exhaust gasses in your coolant. There is a test you can do to see if you're having that. Usually a clue is a hard coolant hoses, and a fuel/exhaust smell in the coolant jug.

The green goo could be moisture buildup. It's normally more of a whitish color, but it varies.

What does the actual oil look like?