Malcolm, What's your blackfriday code?
Yeah, caffelatex definitely leaves a bit of residue, but there is absolutely no need to clean it when topping up sealant - it'd take an hour (or more depending on how much of a struggle you then have reseating tire...) and achieve very little.
not sure why we both have very different experiences with the same tape then ugo.
Stans tape for the record is 0.14mm off the roll. Tesa 4289 is 0.144mm (claimed) measured at 0.14mm as I am not a metrologist. So they are the same thickness to me. I have not tested the adhesive force of both tapes but I have never had issues getting either to stick onto a clean/dry rim.
Your blamming the sealant here but.... A tyre which weighs 530g is going to be a MTB XC tyre or big gravel tyre (it could be a marathon supreme I suppose anyway its big) . All of these tyres have porosity . None of them are truely air tight as they lack a lining. You will be adding a fair ammount each time. probably 80 ml to 100ml or something approach 2.0"
Refilling every 3 month is about right for effetto, thats fairly normal for a road tyre. normally an porous MTB tyre (conti's) seal up after a couple of weeks and sealant generally last well. Stans in such tyres last forever but the down side is you get stanimals and what it seals is fairly limited.
The weight gain is because the tyre have holes not because of the sealant, it actually doing it job. All sealants will absorb into those tyres on a fresh install and you will have to top up after the first week. what there is is no free lunch. The sealants which last longer are generally not as good at sealing. Oranage seal for the record recommend refilling every one to two month. There endurance sealant last longer but does not seal as well.
Orange seal will give the same problem. The solution use a less porous tyre rather than change the sealant.
Tyre plugs are whats get me out of trouble. I dont rely on the sealant to deal with punctures so I care little about how much is actually there.
Continental 5000 s TL only in 25mm for £45
For those with deep pockets
However you get charged £80 for fitting a set. I doubt many here could fit car tyres themselves.