- Joined
- Oct 7, 2013
- Messages
- 104
What's a good liquid solvent agent for dissolving oil sludge?
I'm sure this question has been asked afore only I've looked and I can't see too much so for this Brits first post I ask...
I have I suspect a restricted PCV crankcase breather preventing the negative crankcase pressure most modern engines require for oil control. better compression, emissions and in the case of race engines, power. On many cars clearing sections of the PCV breather is not easy. They are above the oil line so a standard BG109 or similar solvent-flush will not flush the section of the hard -to-get-at bit of the PCV venting in the block. It's above the waterline so to speak i.e., where you would want to flush is not an oil feed, but a restricted or blocked air-way.
I may have an idea that does not involve the time/hassle or leak risk associated with dropping the pan and resealing it, Dropping the sump is a PITA on my Volvo V70 [Volvos & Saabs are known for PCV breather issues.] it involves taking down half the suspension, PAS pipes, the lot. Sod that...
I intend to get the engine hot, switch it off and just fill the sump with solvent via the dip-stick tube.
Then 'cos I have an external pump, if I circulate the flush back out via the dips stick tube, pump it into the vacuum hose feeding into the PCV venting, so that it drops into the PCV vents flushing the vents on the way,. Engine off, the solvent will stay in the sump and get pumped around the PCV breather vents.
Thus the engine is never run. Solvent stays in the sump and target-flushes the PCV system only.
Then I drain the flush and replace with a favourite flavour of synthetic oil?
So, my question… Will it fly? Is this a plan?
Any suggestions please on an effective solvent agent that can dissolve oil sludge. I can leave it pumping round for a few hours. Engine off. It hinges ont he quality of the solvent.
I see an issue, Since the process I have in mind does not run the fluid through the engine at all before being drained-off, it will be done cold.
So gents, I've heard of some using ATF, but what should my solvent be?
BG109 for example and most sludge solvents I'm guessing do their best working hot? Once the engine cools, what solvent, if any will also work cold? On my car to get to the PCV ports I will need to get the intake manifold off so it won't be hot for too long.
I'm sure this question has been asked afore only I've looked and I can't see too much so for this Brits first post I ask...
I have I suspect a restricted PCV crankcase breather preventing the negative crankcase pressure most modern engines require for oil control. better compression, emissions and in the case of race engines, power. On many cars clearing sections of the PCV breather is not easy. They are above the oil line so a standard BG109 or similar solvent-flush will not flush the section of the hard -to-get-at bit of the PCV venting in the block. It's above the waterline so to speak i.e., where you would want to flush is not an oil feed, but a restricted or blocked air-way.
I may have an idea that does not involve the time/hassle or leak risk associated with dropping the pan and resealing it, Dropping the sump is a PITA on my Volvo V70 [Volvos & Saabs are known for PCV breather issues.] it involves taking down half the suspension, PAS pipes, the lot. Sod that...
I intend to get the engine hot, switch it off and just fill the sump with solvent via the dip-stick tube.
Then 'cos I have an external pump, if I circulate the flush back out via the dips stick tube, pump it into the vacuum hose feeding into the PCV venting, so that it drops into the PCV vents flushing the vents on the way,. Engine off, the solvent will stay in the sump and get pumped around the PCV breather vents.
Thus the engine is never run. Solvent stays in the sump and target-flushes the PCV system only.
Then I drain the flush and replace with a favourite flavour of synthetic oil?
So, my question… Will it fly? Is this a plan?
Any suggestions please on an effective solvent agent that can dissolve oil sludge. I can leave it pumping round for a few hours. Engine off. It hinges ont he quality of the solvent.
I see an issue, Since the process I have in mind does not run the fluid through the engine at all before being drained-off, it will be done cold.
So gents, I've heard of some using ATF, but what should my solvent be?
BG109 for example and most sludge solvents I'm guessing do their best working hot? Once the engine cools, what solvent, if any will also work cold? On my car to get to the PCV ports I will need to get the intake manifold off so it won't be hot for too long.
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