Flushing Oil
Concentrate
In the Mid 1980s we identified the almost universal problem of very high oil soot, with small pre-combustion type diesels (e.g. 4x4s). That is, the oil gets black very quickly compared to direct injection diesels (like most large truck types diesels). Many 4x4 owners comment..."All diesel oil is black isn't it?"
The problem is the black soot totally uses up the oils detergency (it stains everything it touches then). Sludge and piston ring sticking result, which causes oil consumption, power loss, high fuel consumption , oil pressure problems, hard starting, blow by AND even chronic overheating. That's right, one of the oils 5 duties is to cool the engine, but it can't do this if sludge restricts oil flow or the underside of pistons are coated in muck! Many modern petrol engines are now also very prone to sludging up severely.
It wasn't until the early 1990s that our search for a solution was finally rewarded. Flushing Oil Concentrate is formulated on purpose specific detergents (not solvents that can cause problems with oil seals, O-rings, and even a crankcase explosion!)
Flush enables owners to restore full cleanliness to their entire crankcase, removing all sludge and piston ring deposits.
How good is it? People with very dirty, thickened oil (even as soon as it is changed) often report back that the oil is so clean, they can't see it on the dipstick. The photo below is after flushing a 3.0L diesel Hilux with 268,000kms. Normally after a service, it would be jet black straight away on the new oil. Here's the proof...
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Nowadays, a lot of modern low emission truck diesels e.g. Detroit Diesel Series 60, Cummins M11 and Signature engines, Caterpillar 3500 series engines, old Perkins, Detroit 2 strokes, Hinos, etc that can suffer sludge problems join the ranks.
Also plenty of modern petrol engines now have sludge problems due to running higher operating temperatures and longer oil change intervals. That rocker cover on the right is from a V6 Camry motor.
Many sludge reports also come in concerning Avalon, Lexus, VW, BMW and in fact most modern pertol engines, since they run higher operating temperatures are more susceptible to sludge. Many car hire companies turn their fleet over so early, that they never bother with oil changes, so sludge build up is inevitable.
Engines not used for months, even years? Overheated engines?
In most cases the rings will be stuck since any carbon present has dried out and hardened. Well, Flush will even dissolve that and free them up again.
How much Flush do I need?
4x4's and light vehicles. The small (250mL) pack will do up to 20L of engine oil.
Your typical Landcruiser diesel takes 10L oil and would need 125mL Flush. (The remainder will do a further 5 "keep clean flushes")
For larger engines, the 1L Flush will treat up to 80L of oil. A Series 60 Detroit takes about 40L oil and needs 500mL Flush. (The remainder will do a further 5 "keep clean flushes")
But you also need to reduce the production of sludge... You need to clean up the combustion process, so that less soot is produced. Then less soot enters the oil, and sludging is minimized. Either FTC Decarbonizer or Cleanpower in the fuel can provide cleaner combustion. Cleanpower cleans and protects the entire fuel system. FTC provides a direct combustion efficiency benefit.