I am reporting that I have not had a timing chain failure. My assumption/understanding is that timing chain stretch alters (retards) camshaft timing and can significantly impair power output. I suspect this (and how much free time I have) will be what drives me to replace the timing chains/guides/tensioners rather than fear of catastrophic engine failure.
3L TDI / CATA / CNRB - VCDS chain stretch
161 - 180 of 225 Posts
Based on @mickblouin84 's report of "everything is fine" at that value, you should be OK for lifetime!
But all jokes aside, I'm really hoping to get some sort of validation of what kind of value would be a flag for a concern in the end.
Reviving this just to post my results. I have 180,000kms on mine. I’m the second owner and the previous owner did oil changes every 10,000kms which I think is a perfect interval for these units.
![Font Screenshot Darkness Multimedia Software]()
Adding my info.
Engine CNRB
OCI - every 4000-5000 miles since we bought the car with 32,000 miles on it, current mileage 99,017 miles
No chain rattle at cold or warm start
![]()
Engine CNRB
OCI - every 4000-5000 miles since we bought the car with 32,000 miles on it, current mileage 99,017 miles
No chain rattle at cold or warm start
Nah, I recycle it and oil is cheaper than an engine.Throwing away good oil
I live in farm country, lots of dirt and dust and pollen in the air just, never saw the point in trying to squeeze every last foot of mileage out of a quart of oil.Plus, forgot to mention while on track weekends where I did not spring for a track garage and/or weather is miserable the Touareg is used as a shelter for heat/AC so more time on the engine than just mileage sometimes.
I would love to see some scientific data on that for sure if available because I'm no spring chicken and never heard that before. In the meantime if anyone wants to buy my used oil at my next change I'll make you a good deal.
In reality it wouldn't change much at this point anyway as it's not my daily and after the Allroad we ordered comes in it will be down to a single highway commute once a week to keep it in service and then the tow duties to track weekends, probably won't even have 7000 miles a year.
Hold while I reach out to my cheap faq yota friends......In the meantime if anyone wants to buy my used oil at my next change I'll make you a good deal.
Here is one: Changing oil too soon is bad??I would love to see some scientific data on that for sure if available because I'm no spring chicken and never heard that before. In the meantime if anyone wants to buy my used oil at my next change I'll make you a good deal.
In reality it wouldn't change much at this point anyway as it's not my daily and after the Allroad we ordered comes in it will be down to a single highway commute once a week to keep it in service and then the tow duties to track weekends, probably won't even have 7000 miles a year.
161 - 180 of 225 Posts
