First of all, I have absolutely no connection with this company other than I bought their product but I do feel to that others ought to know that customer service is alive and well with this supplier:-
http://oilcatchtank.com/
Here's the story.
At the recommendation of Bennet I bought one of these in May last year and it's all detailed here in this thread http://www.350z-uk.com/topic/58175-oil-catch-can-tested-and-proven/
Unfortunately the plastic reservoir developed a hairline crack a the bottom which meant a small amount of oil was dripping into the lower engine bay. I contacted Sam at Rutland Motors and told him my story and he very kindly sent me a replacement on Friday Recorded Delivery, fitted it this afternoon and all is good, now that's how to look after customers, no fuss no issues and no drama even though the warranty had expired. If you are in the market for an oil catch can check them out.