27-11-13, 01:14 AM
Note there are three different types of anti-freeze, two of which shouldn't be mixed so it's best to change the lot and flush with de-ionised water if you don't know what type is in there.
The leaky Delkevic rad I took off definitely rotted through from the outside, once I'd cleared away the fins between the tubes perforations were visible at the bottom of small craters I guess it is worth washing the bike and spraying it with WD40 now and then. Well, in winter anyway.
Re the domed nuts: can't think why Yamaha don't use them. They keep the crap out so the stud doesn't corrode and you never have any problem with them seizing. Making some out of brass seems like hard work though, these are stainless and cost about £3 for ten.