I remember mechanics using diesel fuel to wash their hands, as an alternative to Swarfega or similar. Parts washers all at the time used paraffin.
Simpler times.
Simpler times.
For suspension bolts you need a proper breaker bar. If you can't get access you need an extension bar supported on a jack. Preload the bolt - hard while some else hits the bar end to shock the fastener loose. You need a hefty lump hammer no faffing about tappety tap.
the extension bar will twist an absorb some of your force so a proper breaker bar is better - if you can get it into the job.
A hot air gun will get it hot enough to burn paint. If the nut is accessible angle grind it off.
Get new bolts as the old ones are likely to be weakened one way or another. Use a good quality anti seize paste. It wont (or shouldn't) affect torque values and stops rust messing up the threads. High tensile bolts seem to rust faster than ordinary 8.8 steel so always use a decent protection paste.
Yep, gas axe works every time. A vital item to have for the DIYer working on motors of a certain age.