Just try the home made engine flush formula as under;
1) Put 300 ML diesel in engine.
2) Put 60 ML kerosene oil in engine.
3) Put 200 ML automatic transmission oil in engine.
Run the engine in idle speed for 15 minutes. Stop the engine and drain the oil. Replace engine oil filter and add new oil.
Best homemade formula for engine flushing.
The ingredients in this formula are in a little quantity so it won't hurt the engine whatsoever. Completely safe for any engine. Even this homemade engine flush formula is used in Europe with no complaint. Just take care not to race the engine during using this engine flush. STP and other popular engine flush contain these ingredients.
100 ML mixture of this formula per one liter of engine oil is recommended. For example if your car engine has the capacity of 4 liter oil then 4 x 100 = 400 ML homemade engine flush formula quantity is enough for the engine.
Means mixture is added to old (already existing) oil which is about to be changed & engine is cranked before flushing / draining old oil for a while , what about wiping remaining residual of this cleaning mixture from chamber . Does another intermediary thinner grade lubricant is recommended for running engine for few days or so .
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Atf is best when it comes to take care of carbon don't believe me put it on your car alternater and tear it down than see what it did to alternator brushes plus diesel and petrol want harm anything some professional technicians even top all diesel or kerosine oil in old engine and drain before openion up the engine
Can you please share what harm you think these things will do to engine ?
Yes you put the engine flush mixture into engine with old oil & keep idle running of engine for 10 to 15 minutes & then drain old oil thoroughly till the oil comes out in drops form. Now put new filter & add fresh oil. The very little quanity of engine flush left in engine is so small that it won't do any harm to engine. Next time change formula a bit as under;
1) Diesel 100 ML
2) Kerosine oil 50 ML
3) Automatic transmission oil 500 ML
This is even more effective formula but it is slightly costly as more ATF is used. However, its all depends on your choice.