Best penetrating oil?
Discussion
Is there any consensus on what the best penetrating oil is? Plusgas, Deblock or some sort of homebrew all seem to be bandied about but anyone got any real world experience?
Will possibly need to swap out the glow plugs on the wife's car and will need all the help I can get, so hoping a soak in something for a week or two might help.
Will possibly need to swap out the glow plugs on the wife's car and will need all the help I can get, so hoping a soak in something for a week or two might help.
Edited by JimM169 on Wednesday 27th November 15:43
Innotec Deblock or Bulldog BDX.
Both excellent. Some people say BDX is better, some people prefer Deblock.
You are right about soaking. Spray some a week before, then a top up every couple of days. I'll give you the best possible chance. The biggest mistake people make is spraying a penetrating oil, then 10 seconds later trying to loosen the bolt or whatever. It takes time.
Both excellent. Some people say BDX is better, some people prefer Deblock.
You are right about soaking. Spray some a week before, then a top up every couple of days. I'll give you the best possible chance. The biggest mistake people make is spraying a penetrating oil, then 10 seconds later trying to loosen the bolt or whatever. It takes time.
ProjectFarm did a video on this a couple of years ago. The ATF/Acetone combo came second.
https://www.youtube.com/watch?v=xUEob2oAKVs&pp...
https://www.youtube.com/watch?v=xUEob2oAKVs&pp...
Ferrosol works well and smells good too.
https://bilthamber.com/product/ferrosol/
Sometimes tightening the offending thing a fraction can help break the seize, before undoing.
https://bilthamber.com/product/ferrosol/
Sometimes tightening the offending thing a fraction can help break the seize, before undoing.
Error_404_Username_not_found said:
Crudeoink said:
Automatic tranmission oil mixed with acetone.
Agreed. Old school but hard to beat. OTOH, PlusGas is my go-to.
(Diesel wrangler, so well acquainted with stuck injectors and glow plugs).
Lotobear said:
Quite honestly - GT85 in my experience, it's not marketed as a dedicated penetrating/releasing fluid but it damn well works
My experience too. I have tried everything you can imagine .40 year old Lotus, 20 year old Jag .Best I think GT85. Often cheap on e bay . Worst stuff is WD40. It does nothing.
cliffords said:
Lotobear said:
Quite honestly - GT85 in my experience, it's not marketed as a dedicated penetrating/releasing fluid but it damn well works
My experience too. I have tried everything you can imagine .40 year old Lotus, 20 year old Jag .Best I think GT85. Often cheap on e bay . Worst stuff is WD40. It does nothing.
That said it was the only thing that worked on removing a stuck wheel bearing hub housing from my A6 a few months ago, that and a bit of heat.
5s Alive said:
Error_404_Username_not_found said:
Crudeoink said:
Automatic tranmission oil mixed with acetone.
Agreed. Old school but hard to beat. OTOH, PlusGas is my go-to.
(Diesel wrangler, so well acquainted with stuck injectors and glow plugs).
If I don't use that, I have some PB Blaster which I think works just as well..
For glow plugs, get the engine nice and hot then careful use of a small impact driver is my favourite method.
Everything else, blow torch (or oxy acet torch) and hammers. If you can get to the threads then cleaning them off as best you can (wire brush etc) and squirting some oil on helps of course. I've never found there to be any real difference between any of the options. As far as I can tell the strong opinions seem to come from people who are repeating other people's assertions.
Everything else, blow torch (or oxy acet torch) and hammers. If you can get to the threads then cleaning them off as best you can (wire brush etc) and squirting some oil on helps of course. I've never found there to be any real difference between any of the options. As far as I can tell the strong opinions seem to come from people who are repeating other people's assertions.
Richard-D said:
For glow plugs, get the engine nice and hot then careful use of a small impact driver is my favourite method.
Everything else, blow torch (or oxy acet torch) and hammers. If you can get to the threads then cleaning them off as best you can (wire brush etc) and squirting some oil on helps of course. I've never found there to be any real difference between any of the options. As far as I can tell the strong opinions seem to come from people who are repeating other people's assertions.
On that basis we better ignore your contribution then.Everything else, blow torch (or oxy acet torch) and hammers. If you can get to the threads then cleaning them off as best you can (wire brush etc) and squirting some oil on helps of course. I've never found there to be any real difference between any of the options. As far as I can tell the strong opinions seem to come from people who are repeating other people's assertions.
cliffords said:
Richard-D said:
For glow plugs, get the engine nice and hot then careful use of a small impact driver is my favourite method.
Everything else, blow torch (or oxy acet torch) and hammers. If you can get to the threads then cleaning them off as best you can (wire brush etc) and squirting some oil on helps of course. I've never found there to be any real difference between any of the options. As far as I can tell the strong opinions seem to come from people who are repeating other people's assertions.
On that basis we better ignore your contribution then.Everything else, blow torch (or oxy acet torch) and hammers. If you can get to the threads then cleaning them off as best you can (wire brush etc) and squirting some oil on helps of course. I've never found there to be any real difference between any of the options. As far as I can tell the strong opinions seem to come from people who are repeating other people's assertions.
cliffords said:
Richard-D said:
For glow plugs, get the engine nice and hot then careful use of a small impact driver is my favourite method.
Everything else, blow torch (or oxy acet torch) and hammers. If you can get to the threads then cleaning them off as best you can (wire brush etc) and squirting some oil on helps of course. I've never found there to be any real difference between any of the options. As far as I can tell the strong opinions seem to come from people who are repeating other people's assertions.
On that basis we better ignore your contribution then.Everything else, blow torch (or oxy acet torch) and hammers. If you can get to the threads then cleaning them off as best you can (wire brush etc) and squirting some oil on helps of course. I've never found there to be any real difference between any of the options. As far as I can tell the strong opinions seem to come from people who are repeating other people's assertions.
Richard-D said:
For glow plugs, get the engine nice and hot then careful use of a small impact driver is my favourite method.
Everything else, blow torch (or oxy acet torch) and hammers. If you can get to the threads then cleaning them off as best you can (wire brush etc) and squirting some oil on helps of course. I've never found there to be any real difference between any of the options. As far as I can tell the strong opinions seem to come from people who are repeating other people's assertions.
Totally agree with this, we've done thousands of glow plugs over the years and by far the most effective way is getting the engineEverything else, blow torch (or oxy acet torch) and hammers. If you can get to the threads then cleaning them off as best you can (wire brush etc) and squirting some oil on helps of course. I've never found there to be any real difference between any of the options. As far as I can tell the strong opinions seem to come from people who are repeating other people's assertions.
hot.
Doesn't matter what penetrating oil you use if glow plugs are stuck, it just wont get down the side of the threads, we did this experiment
on an engine that had easy to remove glow plugs, the threads were lightly corroded brownish and dry, we put the glow plugs back in and torqued
them up, then put in a variety of lubricants, plus gas, ATF, wd40, and GT85, we then sat that old engine aside for a month and made sure
they were all still bathed in fluid over that time, at the end of the month the engine was tipped over and all the fluids drained and mopped
up with rags and tissue, the glow plugs were then removed again and every single one of them still had the same dry threads.
Of course it won't do any harm to try lubricating them, but a hot engine is the way we do it.
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