02-01-2014, 05:03 PM
I'm with Chester..I always use Grade 8 on suspension components etc. Grade 8 has 6 marks. At least 25% stronger than Grade 5 I think.
1993 Newell (316) 45' 8V92,towing an Imperial open trailer or RnR custom built enclosed trailer. FMCA#232958 '67 Airstream Overlander 27' '67GTO,'76TransAm,'52Chevy panel, 2000 Corvette "Lingenfelter"modified, '23 Grand Cherokee.