Cleft_Asunder
Thread starter
Originally Posted By: Cujet
Originally Posted By: Cleft_Asunder
Originally Posted By: Cujet
Once again,
No common solvent dissolves hard carbon. Not Marvel Mystery Oil, not Berrymans, Not Carb Clean, not Seafoam, nothing.
Only chemicals that contain methylene chloride or other caustics will soften or dissolve hard carbon. Such as paint stripper, oven cleaner, paint gun cleaner and so on. Ever wonder why blocks and heads are cleaned with a "hot tank" caustic process? Placing them in a typical parts washer won't remove the carbon, regardless of how long you let them sit.
I have had success with higher viscosity synthetics in cars that consume too much oil.
Can I put any of those through the spark plug holes before an oil change and let it soak, or can I mess something up?
I think what you are asking is if you can use very harsh, often caustic chemicals internally in your engine. Absolutely not! While the piston, valves and rings won't likely be affected by them, seals, gaskets, plastics, composites and rubber parts will be destroyed by them. Yes, I've used EZ-OFF engine cleaner to clean intake manifold ports and intake valves. But, only with the valve closed, done carefully-one at a time, and the metal intake manifold sitting in the driveway
Today, I'd never do such a thing. I prefer to use synthetic oil to prevent or reduce the risk of carbon buildup on rings and valves. My suggestion stands: Try a higher viscosity, quality synthetic oil. Possibly high mileage Mobil 1, 10W-40. It's use will help clean and keep clean engine internals.
Why such a high viscosity? Because it is less likely to seep through the rings? I was thinking about increasing my viscosity to 5w-40 at first, but your suggestion sounds better since I would burn less oil in the winter too. I think I will continue using valvoline high mileage synthetic blend, plus adding some LC20 in there.
Originally Posted By: Cleft_Asunder
Originally Posted By: Cujet
Once again,
No common solvent dissolves hard carbon. Not Marvel Mystery Oil, not Berrymans, Not Carb Clean, not Seafoam, nothing.
Only chemicals that contain methylene chloride or other caustics will soften or dissolve hard carbon. Such as paint stripper, oven cleaner, paint gun cleaner and so on. Ever wonder why blocks and heads are cleaned with a "hot tank" caustic process? Placing them in a typical parts washer won't remove the carbon, regardless of how long you let them sit.
I have had success with higher viscosity synthetics in cars that consume too much oil.
Can I put any of those through the spark plug holes before an oil change and let it soak, or can I mess something up?
I think what you are asking is if you can use very harsh, often caustic chemicals internally in your engine. Absolutely not! While the piston, valves and rings won't likely be affected by them, seals, gaskets, plastics, composites and rubber parts will be destroyed by them. Yes, I've used EZ-OFF engine cleaner to clean intake manifold ports and intake valves. But, only with the valve closed, done carefully-one at a time, and the metal intake manifold sitting in the driveway
Today, I'd never do such a thing. I prefer to use synthetic oil to prevent or reduce the risk of carbon buildup on rings and valves. My suggestion stands: Try a higher viscosity, quality synthetic oil. Possibly high mileage Mobil 1, 10W-40. It's use will help clean and keep clean engine internals.
Why such a high viscosity? Because it is less likely to seep through the rings? I was thinking about increasing my viscosity to 5w-40 at first, but your suggestion sounds better since I would burn less oil in the winter too. I think I will continue using valvoline high mileage synthetic blend, plus adding some LC20 in there.
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