Blackstone labs say no coolant found in oil

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landbeast

landbeast

Joined
Jul 13, 2020
Threads
3
Messages
32
Location
nashville
Hi everyone, it’s been a while since I’ve been here , but had a new radiator/ thermostat, new antifreeze Toyota red of course . Drove for a week , parked it for a bit , when I went to drive it white smoke , I was told drive it probably the valve seals , I have no idea , need help from guys that know , 80 series 271000 on her , motor is strong , it seems it has used a little coolant . No milkshake oil as far as I can tell . Any help
Or advice at all appreciated . Im
Sure I didn’t give enough detail , so if someone ask about something I forgot I’ll fo my best with answer .
 
White smoke all the time or just at startup?
 
landbeast said:
Even after 10 minutes or so of warm up truly afraid to pull it out of the driveway. I want no more damage
Click to expand...

Might need to take a pic. Could just be condensation in the exhaust.

Cold start will sometimes cause this, you may also have slight coolant weep at the head gasket because we have aluminum heads on an iron block so as it warms up, metals tend to expand slightly and fill gaps.
 
What does it smell like?
 
That's coolant
 
You do not need a "rebuild". At worst, you may need a new headgasket. The bottom end of the engine would not cause a leak of coolant into the exhaust. It sounds like you're getting advice from GM "experts". Land Cruisers are unique in many ways, one of which is that they have fuel injected 1950s engines, which almost no one knows anything about these days, except for some very well informed folks here.

At 270k+ miles, you do need new valve seals; we all do. Not all of us wants to pull the head off to replace them, so we live with it. Valve seals will not be the cause of coolant leaking into the exhaust. The valve seals seal the valve train from the cylinders, so that oil can't move from one to the other. The headgasket seals the coolant jacket from the valve train and cylinders, so that it can circulate from the block into the head and back out again.

You can verify the compression with a compression tester, which you can "rent" for free at a parts store. That will tell you if you have a real problem. Please do download the service manual from the Resources forum. Get the Electrical Wiring Diagram (EWD) while you're there.

Oh, and please put the year of your truck in your signature.
 
How would you compare it to this?

This is mine, and I don't worry about it. It persists for a bit (~10 mins at cold start), but goes away shortly after driving. Doesn't smell sweet, though. I expect it's primarily condensation in the exhaust.

Screenshot 2025-12-16 at 9.20.01 AM.webp
 
Malleus said:
You do not need a "rebuild". At worst, you may need a new headgasket. The bottom end of the engine would not cause a leak of coolant into the exhaust. It sounds like you're getting advice from GM "experts". Land Cruisers are unique in many ways, one of which is that they have fuel injected 1950s engines, which almost no one knows anything about these days, except for some very well informed folks here.

At 270k+ miles, you do need new valve seals; we all do. Not all of us wants to pull the head off to replace them, so we live with it. Valve seals will not be the cause of coolant leaking into the exhaust. The valve seals seal the valve train from the cylinders, so that oil can't move from one to the other. The headgasket seals the coolant jacket from the valve train and cylinders, so that it can circulate from the block into the head and back out again.

You can verify the compression with a compression tester, which you can "rent" for free at a parts store. That will tell you if you have a real problem. Please do download the service manual from the Resources forum. Get the Electrical Wiring Diagram (EWD) while you're there.

Oh, and please put the year of your truck in your signature.
Click to expand...
Well thank you for the in-depth information, any resources for a competent shop in the Nashville tn area , no one truly wants to discuss getting involved in engine work . I have had a shop offer a jasper engine swap ( NOT HAPPENING!! ) also mine is a 40th anniversary 1997
 
landbeast said:
Well thank you for the in-depth information, any resources for a competent shop in the Nashville tn area , no one truly wants to discuss getting involved in engine work . I have had a shop offer a jasper engine swap ( NOT HAPPENING!! ) also mine is a 40th anniversary 1997
Click to expand...
I'd post a request for information in the Nashville clubhouse; someone in middle Tenneessee can help.
 
As others have mentioned, there's a few things you can do:
  • compression test (or cylinder leak down test)
  • cooling system pressure test (to determine if you're losing coolant through a leak somewhere)
  • co2 combustion leak test (tube with blue dye that you suck air through on your radiator with cap off to detect exhaust gases in your coolant)
 
landbeast said:
Looks kinda like that probably more and it smells sweet
Click to expand...

bhsdriller said:
Just drive it, not going to find anything out letting it sit

my exhaust has smelled "sweet" for the
Click to expand...

petegangies said:
As others have mentioned, there's a few things you can do:
  • compression test (or cylinder leak down test)
  • cooling system pressure test (to determine if you're losing coolant through a leak somewhere)
  • co2 combustion leak test (tube with blue dye that you suck air through on your radiator with cap off to detect exhaust gases in your coolant)
Click to expand...
Thank you , I’m not the most learned mechanic by no means , but these things you mentioned I’m fairly confident I can do . So I suppose this will be my next step
 
Rich fuel mixtures at cold start smell sweet. Sitting for a week will cause some condensation in your exhaust. If there was coolant in the cylinder you may also notice some misfiring at start up. I don't think your HG is bad yet. Now if you have some worm clamps and/or aftermarket radiator hoses I'm more inclined to believe you're losing coolant through that.
 
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