What does the panel think? I have recently lubricated the leaf spring and spring hanger bushes with AC50 followed up with few brush loads of EP90.i'm sure the ride is smoother, What experience do you have on frequency of lubrication of these bits of kit. My pals 20hp 1924 Rolls (ex Mr Bird of Birds Custard Powder) has leather fitted covers over its springs c/w grease nipples which might infer regular attention was needed.