Originally Posted by
mikestr
Doesn't sealant have a short life inside a tube before it starts disintegrating? And then you'd have to pour more sealant in or toss the tire?
I'm using Orange Seal and initially I didn't top it up - it still worked after 1 year inside the tyre.
Then it stopped working but I think that's because I'd used up the 1oz I put in earlier, or maybe it stops working after a year.
I now add 1oz per tyre roughly every 6 - 9 months.
In theory I could remove the valve and measure the sealant depth with a dipstick but my reqime works so I haven't bothered.
Edit: flat free for 3945 miles