I live on a short private road that I share with 4 other neighbors - it's really not much more than a 1500-foot long driveway. We had this road paved about 7 years ago by a very reputable road paving company, and they did a great job and the road is in very good shape. The road only gets about 10-15 car round trips per day, so it's not heavily used. The road has no visible cracks or any other signs of aging.
One of the neighbors is suggesting that we MUST seal the road now to give it a longer life, saying that using an oil-based sealer is critical to extend the life of such a road or driveway. Better to spend a bit now to seal and extend the life, rather than spend a lot in a few years to repave.
I had our paving company come out to look at the road, and they said it was in great shape, but I'm not sure if they're motivated to have us need a re-pave at some point. We've also gotten quotes from a few other paving companies, who have suggested both water-based and oil-based sealers. The Internet offers many different recommendations, ranging from "don't ever use oil-based sealer" to "oil-based sealer is the best" to "don't ever seal asphalt until it needs it".
Can anyone shed light on why there is such a wide range of recommendations on how to maintain an asphalt road/driveway? Are there different types of asphalt, and does it depend on the type of asphalt used? Thanks for any insights.