oil contamination & sludge - oil flush

I had few issues in the past with the oil system, every time i do an oil change and check my oil after few hundred miles the oil looks dirty, I searched a lot to do engine flush and called some dealers, I noticed in Canada the toyota dealer sells engine flush made by German company called bluechem & autoprofi, so finally I found the products sells in the states on there we goautoprofi but I have question if anyone tried it before ?
just to mention when I spoke to the dealer they told me this product dissolves the sludge and contamination in very effective way and does not let the sludge break lose in the system and this product certified as well.
any one have experience with this product ?

 

I've never tried this. I had a bad fuel leak on my car, and the crank case filled up with gasoline. Ever since, the oil has stayed really clean - it's like the gasoline cleared all the dirt out of the nooks and crannies or something. Not sure if that is relevant here.

 

I tried before few brands but didn't work well or I didn't notice big different, I'm going to try this on the weekend and will post results here...

 

Oil usually darkens after a few hundred miles. It's the detergents at work; it doesn't mean the engine is dirty or the oil is contaminated and needs to be replaced.

What are you driving? Dark oil is expected of an older truck. A newer truck would run longer without the oil darkening.

I would be more concerned about that product dissolving a chunk of sludge and it breaking loose ... possibly ending up blocking an oil gallery or the oil pump itself and causing a catastrophic failure.

 

Oil will get dark when get contaminated or high heat, the clean healthy system will not make oil dark dirty in just few hudred miles, I used engine flushes before and I notice difference with the performance, this time I'm going to track that through my gas mileage, I will start with my 2008 Toyota Sienna, average miles 285 per tank and will do as well the fuel cleaner as this company product recommend and will post my results...

 

Looking at oil isn't a reliable indicator of anything, especially if you're talking about on a dipstick or when drained.

The only reliable method is from a lab like Blackstone.

I have successfully cleaned up neglected engines simply with 2-3 low OCIs (1-2k). Oils have a lot of detergent and will do a fine job.

 

Your 10 year old minivan is well worn and the oil will darken quickly. It means nothing.