as above i dont agree. Engine oil flushes are something that most European car service departments use to add that extra money ontop of every service bill. They are not required on any engine - and can deem dangerous on older engines so not ftw lol. A consistent oil change will keep crud and sludge out of your engine.
Engine oil has cleaners inside which get rid of the gunk and crap. Just change the oil regularly and you should be fine..
Also remember that black oil doesnt always mean DIRTY. You can get an oil analysis to see long oil will really last in your car [all cars are different..] Sometimes, the oil may last 15K km's.. while the same oil in another car may only last around 5K km's till the cleaning + lubricating properties of the oil start deteriorating
I cbf.. so i just change the oil every 5K.. its cheap to do .. and doesn't take long
I use 15W/40 diesel oil. Diesel oils have higher detergent and dispersent levels (than petrol oils), which to some degree will tend to clean the crankcase and piston rings etc, but less harshly than a bottle of chemical flush.
Diesel oils are also typically very high quality oils, with very high film strength, lubricity, high flash points etc. High flash point means they don't burn easily, which means they tend to leave less burnt deposits on piston rings and in ring lands, or in the combustion chamber.
I wouldn't use any sort of flush, (or high detergent oil for that matter) in significantly sludged engines, but even older Honda engines with a good oil change history (typically) seem to be fairly clean. If the engine is dirty, I'd want that dirt to remian stuck to where it's already stuck, not liberated into the oil. IMO, if the engine is dirty enough to need cleaning, it's likely to be too dangerous to clean it...
not a gimmick its a valid part of servicing. That is , to make money off something that isnt required. Its nt needed , and as stated can be damaging to older or worn engines.
If the engine is dirty, I'd want that dirt to remian stuck to where it's already stuck, not liberated into the oil. IMO, if the engine is dirty enough to need cleaning, it's likely to be too dangerous to clean it...
Same point i made earlier.
Think of when a human or any animal has a stroke. Its when a deposit is displaced and blocks another place somewhere else. This = major problem or death.Its correct with an engine too. If an engine is mistreated over time it will have buildups , which will cause issue if displaced via a strong cleaner of sorts.
No need for engine flush ever.
Just keep consistent on servicing and your engine will never develop any 'sludge".
Originally Posted by bennjamin
Bookmarks