Jan
Member
- Messages
- 884
- Location
- Rotherham, South Yorks
"If the engine oil is changed at regular (recommended) intervals" is the usual reason given for not flushing engine. If the car is second hand and the current contents of the sump are completely black how do you know what the actual service intervals were from the previous owner(s)? The obvious answer is that you don't!
Some owners barely know how to open the bonnet to check the level/quality of any of the replaceable fluids and will blithely soldier on for years with nothing more than topping up the windscreen washer fluid, but only after it runs out. Others take the car into a garage which uses the vacuum suction tool to 'drain' the sump through the dipstick hole (often with a cold engine) for speed, which leaves a lot of cr4p in the bottom of the sump.
On many cars it's quite easy to drop the sump to check for an accumulation of 'clag' in the bottom, but on many cars it's a complete PITA to remove and refit it. If you're dead set on not using 'unknown chemicals' in the engine then just refill with any cheap oil, leave it in for a couple of days and simply drain it off while the engine is still hot from a decent run (discarding it according to local laws) and refill with fresh oil of the correct grade. What's 'snake oil' about that?
Some owners barely know how to open the bonnet to check the level/quality of any of the replaceable fluids and will blithely soldier on for years with nothing more than topping up the windscreen washer fluid, but only after it runs out. Others take the car into a garage which uses the vacuum suction tool to 'drain' the sump through the dipstick hole (often with a cold engine) for speed, which leaves a lot of cr4p in the bottom of the sump.
On many cars it's quite easy to drop the sump to check for an accumulation of 'clag' in the bottom, but on many cars it's a complete PITA to remove and refit it. If you're dead set on not using 'unknown chemicals' in the engine then just refill with any cheap oil, leave it in for a couple of days and simply drain it off while the engine is still hot from a decent run (discarding it according to local laws) and refill with fresh oil of the correct grade. What's 'snake oil' about that?