Re: Fix for squeaky a-frame bushings, spray lubricant?
No. You have either A) worn out upper arm bushings or B) worn out spring perches. The proper fix is to replace the worn parts. Most likely, it's the spring perches. The rubber insert deteriorates and eventually fails, allowing metal-to-metal contact in the pivot. Spray lube won't fix that. You can't get spray lube inside the upper arm bushings anyway - they have to be set up to use pressure grease fittings. A-arm bushing squeak is not a common problem, it's a sign of a real problem.
1967 Falcon 4 door 351C - 70 Mustang 351C
Owner built, owner abused.