For various people the word “knocking” may have different meanings. If it’s really knocking, you have noisy, strong noises from bad bearing, and nothing you can add to the oil can remedy that, although it can be minimized by thicker oil or oil thickeners (while affecting other sections more).
However there a few main reasons for engine knocking and what is the best oil additive to stop engine knocking, not all knocking can prevent from oil additive therefore here are all below reason which we can prevent from oil additive.
Vehicle Ran Dry of Oil and Started Knocking the Engine
Knocking While Acceleration with White Smoke from Exhaust
The knocking on acceleration is most likely a worn crankshaft bearing, and the smoke is probably worn piston rings or valve guide seals. Valve guide seals will usually cause smoke on startup and then will disappear after driving for a few minutes; worn piston rings will smoke all the time.
How you can fix it?
You have to dig in deep to find the exact cause of the reason, but most probably your engine in both issues have a seal leak, ring and piston valve need to be change, however some remedies you can do to deferred the engine overhauling by using some of the best oil additives you can use.
Use High grade motor oil, a thick oil will take more time to burn than a thin oil, however it depends on how long the thick oil will long last.
In this scenario car burns oil checking after 500 miles, top it off again and recheck it in another 500 miles, this will give you an idea of how much oil you’re losing or burning.
Use oil additives into existing engine oil you are using, Oil additives are chemical compounds that is used to improve the lubricant performance of base oil. These lubricating oils will reduce the friction between the two surfaces. In addition to the advantages these oils have more expense over the base oil.
Again in this method, car burns oil checking after 500 miles, top it off again and recheck it in another 500 miles, this will give you an idea of how much oil you’re losing or burning.
Ring Seal Smoke repair is formulated to help stop blue exhaust smoke, reduce oil burning and prevent plug fouling caused by “blow-by”. Blow-by is usually caused by gaps in internal engine parts resulting from excess wear. Ring Seal contains viscosity improvers that thicken the oil film filling these gaps.
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Liqui Moly Anti-Friction Oil Treatment (300ml)
Anti-friction forms high load-bearing film of lubricant on all friction surfaces. Recently made by Liqui Moly, not been lying around. You will be surprised at how much better your engine sounds and how controlled it will be even at very high RPM.
Archoil AR9100 (473ml)
Increases power and response, Reduces friction and provides anti-wear, extreme pressure and anti-corrosion protection, Reduces engine noise and vibration, Protects engine during cold starts, Cleans and prevents sludge/varnish deposits, Extends oil drain intervals.
AR9100 eliminates hard/cold start issues caused by HEUI injector misfires in 6.0L & 7.3L Power Strokes.
Amsoil P.i. Performance Improver Gasoline Additive (355ml)
P.i. improves fuel mileage an average of 2.3% and up to 5.7%. Reduces emissions such as hydrocarbons (HC) up to 15%, carbon monoxide (CO) up to 26% and nitrous oxides (NOx) up to 17%. Restores power and performance. Reduces the need for costly higher octane fuel. (API)
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Other common issues
Too Low Octane causing engine knocking
Detonation knock is a knocking noise that you’ll hear when the air fuel mixture in the cylinders is detonating in more than once place at a time. Parts of the air/fuel mixture can start to ignite too early. When these mini fireballs collide, they create a knocking noise.
If your car has a performance-tuned engine rated for high-octane fuels, you could experience engine knock if you put in fuel with too low of an octane rating.
How you can fix this issue?
Fill your car tank with high octane fuel and drive car above 75-90m/h for at least 15 minutes, it will burns all dust and deposit.
If the problem still persist then there are some oil additives you can use along with octane 92 fuel, 90 percent having that issues fixed by using this method.
Using an octane booster to get through your last tank of low octane fuel is fine, but from now, on you want to buy the right kind of fuel. You should also keep in mind that whatever low octane fuel is left in your tank when you fill up will mix with your new fuel, so if knocking continues, go ahead and use the octane booster for another fill-up or two until most of the low octane fuel is gone.
It will not only remove engine knocking noise but increase fuel efficiency per kilometre and reduce emission.
STP Octane Booster Fuel Additive (155ml)
STP Octane Booster helps restore horsepower and acceleration by removing deposits and cleaning the fuel intake system. This two-in-one formula boosts octane and cleans the fuel intake system to restore lost performance. Use regularly when you fill up your tank to help reduce knocking and pinging. For over 60 years, and for more miles than anyone can count, STP has been one of the most trusted names in automotive care.
Lucas Oil 10026-PK12 Octane Booster (444ml)
Lucas Oil Octane Booster claimed to deliver three times more boost than most other brands. It’s safe for turbos, oxygen sensors, and more! Stops knocks and raises performance in high compression engines. Safe for any gasoline engine. Lucas Octane Booster is a genuine performance enhancer! One 15 oz. bottle treats up to 25 gallons of fuel. Not street legal.
Rislone Super Concentrated Octane Booster (177ml)
Rislone Super Concentrated Octane Booster increases your fuel’s octane rating to stop engine hesitation, knock and ping, while also increasing power and performance. The formula works equally well on classic muscle cars, newer, smaller, harder-working engines, off-road and racing applications. The increased octane allows the engine to run optimum spark timing, which not only creates more power, but also, in many engines, reduces emissions and increases fuel mileage.
Royal Purple Max Boost (473ml)
High-performance octane booster with fuel treatment that increases gasoline octane, reduces emissions, and enhances engine performance while stabilizing fuel. Max-Boost is formulated with MMT, which delivers the best octane enhancement to help eliminate engine-damaging detonation, pre-ignition, and pinging or knocking from low octane gasoline. Max-Boost is formulated for engines equipped with carburetors, port fuel injection and direct injection, as well as turbocharged, supercharged and nitrous-injected engines. Safe for use in leaded and unleaded gasoline’s, and alternate fuels like gasohol, reformulated gasoline, and all ethanol blends. Max-Boost is safe for oxygen sensors and catalytic converters
Torco F500010TE Unleaded Fuel Accelerator (945ml)
A blend of components which transforms the makeup of premium pump gas to closely resemble race fuel Significantly raises the octane of premium fuel (91 octane): 32 oz To 10 gals = 102 octane, 32 oz to 5 gals of fuel = 105 octane! Will not harm sensitive O2 sensors or catalytic converters Great for motorcycle, ATV, snowmobile, watercraft and automotive use.
Contaminants in your cylinders as a result of poor combustion (Bad Timing)
Again, it can be a matter of using the wrong power. Not only can it cause knocking by igniting at the wrong time, it can also leave excess contaminants in your cylinders as a result of poor combustion. If you are using the right fuel now, the pollutants left by past fuels that need to be washed out.
Using octane booster might not be helpful at this time therefore you have to wash your cylinder to keep out all containment, however opening a cylinder from mechanic is not an easy task, it requires high precision and vast experience expert to do that.
Recommended to use first system fuel treatment in to your fuel tank before going for through cleaning from mechanic if the problem still the same.
How to fix this?
Use Fuel system cleanser oil in to your fuel tank and observe for a while, if at your location the fuel quality is too low then use every 5000miles and if a fuel quality is standard overall not too low then every 10,000 to 15,000 miles.
Lucas 128 Ounces LUC10013 10013 Fuel Treatment (3.8L)
Lucas Fuel Treatment is formulated for both gasoline and diesel engines, carbureted or fuel injected. It gives your fuel system what it really needs – a blend of super slick oils and additives with a high detergent action that allows the engine to operate at maximum efficiency. Also, it cleans and lubricates the carburetor and injectors and causes the fuel to burn more thoroughly for increased power and less fuel consumption.
STP Complete Fuel System Cleaner (155ml)
Engines can form harsh deposits that can lead to reduced performance and efficiency. Use STP® Complete Fuel System Cleaner with their propriety blend of PEA and PIBA detergents to remove harmful deposits and more.
Liqui Moly 2007 Jectron Gasoline Fuel Injection Cleaner (300ml)
Cleans contaminated petrol injection systems, removes carbon deposits and deposits from fuel pipes, fuel distributors, injection and inlet valves; therefore, no starting problems and no lean surging, smoother idling, good throttle response, low-pollution, and environmentally compatible combustion. Promotes accurate injector dosing and fuel atomization: Your engine regains its original performance. Fuel consumption is reduced. Especially suitable for engines with catalytic converters.
Royal Purple Max-Clean Fuel Cleaner (591ml)
Royal Purple’s Max-Clean is a state-of-the-art synthetic fuel system cleaner that deeply penetrates and cleans injectors, carburetors, intake valves and combustion chambers to restore fuel economy and reduce emissions.
Liqui Moly Super Diesel Additive (300ml)
Removes deposits in the diesel injection system and in the combustion chamber and prevents them from renewed formation.
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Tick, Tick, Tick Sound Possibly a Valve-Train Issue
Your engine is ticking like a time bomb, particularly when it’s cold in the morning. You possibly have an problem with the valve-train.
Using intake valves, the engine feeds clean air into the cylinders and exhaust valves to clear out spent combustion gases. The valves open and close, in a choreographed whirlwind of activity, thousands of times per minute.
A finely balanced system of parts – rocker arms, valve stems, cam lobes, lifters – control their movements. The clearances between these parts, known as lash, can become loose (or sloppy, in automobile nomenclature). When that happens, all those moving parts clattering against each other can create a ticking sound.
Proper oil pressure plays a big role in valve-train operation and noise. Low oil pressure can reduce the effectiveness of hydraulic lifters, increasing lash. This is most likely to occur with a low-quality conventional oil that thins at high temperatures, preventing the engine from developing good oil pressure.
· Rod Knocking
Rod knock is yet another possible explanation for your engine knocking sound.
Your engine is positioned between the crankshaft journals and the connecting rods, with a planned clearance. The motor oil fills those clearances in a properly running engine using a good oil, and prevents metal-to-metal contact.
Probably you’ve been using a poor-quality conventional oil.
At high temperatures, the oil thins and the fluid film weakens. The pressure between the crank journals and connecting rods squeezes the oil from the clearances. Now, metal is riding on metal, wearing the surfaces and widening the clearances. Eventually the clearances widen so much that you begin to hear the metal surfaces clattering against each other. Eventually, they’ll weld together and destroy the engine.