Thanks for the suggestions. Iv already removed the one way valve from the cap and it made little to no difference. Will report back after a long drive this weekend.
Ps I have always had old cars, currently have a 72 marina van 75, type 2, 2x87 sj's, 89 merc and the newest shamefully a 98 land rover discovery.
Ps I have always had old cars, currently have a 72 marina van 75, type 2, 2x87 sj's, 89 merc and the newest shamefully a 98 land rover discovery.