First of all many thanks to Mr. Kilmer for having recommended this AT-205 Re-Seal oil additive - I can confirm that it really works.
And my question is a short one: is there any official document known to anyone, which specifies, how long this sealing effect really lasts, after the additive is no more present in the oil (e.g. after an oil change)? Thank you!
If it's an older car it's best to add it every time you change the oil because most of it goes away and it's a permanent process where it keeps rejuvenating old rubber
Thank you for the reply, Mr. Kilmer! I understand that your proposed solution - adding the AT-205 with every oil change - is the best / the safest one.
It is just that getting hold of the AT-205 is not easy in my part of the world, neither is it cheap here, so I am investigating what the longest time intervals may be, which would still give me the sealing effect with minimal AT-205 consumption possible. My guess would be that such info might be contained in some AT-205 manufacturer´s specs, but my googling for that did not render any results 🙁