How to Remove Engine Glaze and Restore Cylinder Compression

by Andy Published on Thursday, April 30th, 2020

There are numerous causes of cylinder compression loss. The first is poor engine break-in. If you haven’t already done so, we recommend you read our guide on “Engine Break-in” HERE.

Providing it hasn’t been left too long, and the glazing hasn’t resulted in bore polishing (bore wear), the glaze can be removed and cylinder compression restored. Left untreated, it can result in bore polishing, when the machined hone marks wear away. This can only be corrected by re-honing the cylinder walls.

Engine glaze is a condition where hardened oil deposits fill the asperities in the cylinder hone markings. When this occurs, engine oil has nothing to “grip” onto, so it cannot deliver the necessary lubrication and protection. It also limits the seal between the piston rings and cylinder, resulting in a loss of engine power and excess oil consumption. These hardened deposits cannot be removed with conventional engine flushes.

Another cause is poor oil quality. The oil stock can break down, burn, and create a glaze. This causes combustion gases to blow by the piston rings, contaminating the oil further and thus creating a vicious cycle of oil breakdown. Neglected engines and overused engine oil can also contribute to this.

Bore glazing is particularly prevalent in engines that run idling for extended periods. This includes generators, but the issue is more commonly attributed to marine engines. Removing cylinder glazing will enable the piston rings to re-seat against the liner and ensure the lubricating oil can lubricate and protect as intended.

How do you fix compression loss from suspected bore glazing?

Effective and rapid cleaning is not a simple task. It requires a much stronger and more complex product with chemistry that rapidly cleans while protecting the engine. This is not a job for a cocktail of cheap solvents. Delivering sufficient protection to the engine can be a challenge for conventional de-glazing products to the degree that cleaning performance is compromised. Many rely on the existing engine oil without adding any additional lubricity package.

We recommend Oilsyn ReleaseTech Power Flush, which contains unique and powerful cleaning agents within a non-interference, very lubricious, proprietary ester base. This ensures the engine is protected throughout the cleaning cycle to the degree that, under professional use, the vehicle can be driven gently for a short period with ReleaseTech in the engine oil to improve cleaning performance. Cleaning power and engine protection are not compromised.

Cleaning the engine lubricating system

ReleaseTech’s powerful formula not only helps restore engine compression but effortlessly removes deposits from within the engine and sump. Deposits are safely dispersed and held in suspension within the lubricating oil without any risk of blocking oil channels, provided the oil is drained immediately after the cleaning cycle. This will improve efficiency and help extend oil life while reducing excess engine noise and clatter.

ReleaseTech Power Flush will not restore actual engine wear. Still, it remains a cost-effective way of determining if the underlying issue is engine glaze and thus provides a process of elimination before any costly strip-down. If Oilsyn ReleaseTech doesn’t fix it, no other engine-flush product will likely make a difference. Depending on the severity of wear, the engine will require an oil compression/viscosity additive or, worse, a cylinder re-hone.

Customers of ReleaseTech Power Flush report improved engine performance in cases of restored engine compression, quieter running, and engine oil that stays cleaner for longer.

Oilsyn is confident that ReleaseTech Power Flush or Power Cleaner will offer the best chance of restoring lost engine compression, and it comes with a full money-back guarantee if it does not.

ReleaseTech Power Flush can be purchased HERE.

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3 thoughts on “How to Remove Engine Glaze and Restore Cylinder Compression”

Pingback: Engine Break-in, Bed-in, Run-in Definitive Guide. | Fuel Tech Experts - Lifting the Lid on Fuel & Oil Additive Market
Paul Davies says:

August 19, 2020 at 12:36 pm

Hi

I have a 2006 Saab 9-3 1.9 Tid that has had an “official” Hirsch remap from 150 up to 180 done by a Saab dealership(when they existed) prior to my ownership. It has done 135000 miles & generally runs well, I am trying to keep the engine in the best possible shape & with all the “do it – don’t do it” stuff that goes on re high mileage engines, wanted to know if using Release Tech Power Flush, then a quality oil & additive eg Archoil VR9100 or VR9200 VR would help or be of benefit.

Reply
1. Andy says:
  
  August 21, 2020 at 10:23 am
  
  I would recommend the engine flush followed by AR9200 V2. Use AR6900-D in with the fuel unless using V-power diesel or similar, in which case use Hybrogen Road.
  
  Reply

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