Get a stopwatch and a funnel with the smallest outlet you can find.
Fill this funnel with oil with your finger blocking the outlet.
Start the stopwatch at the same time you release your finger letting oil flow.
Stop the stopwatch when oil level drops to the bottom of the “V” of the funnel.
Compare oil viscosity this way.
Experiment with both room temperature and warmer oil. I did something similar just recently on a set of struts, The Mfg'r wouldn't share the oil info with me and all I was doing was resealing and oil replacement they "preferred I send them in for service" .I used a plastic H20 with a pin hole in the cap. Filled the bottle with 4oz of a known visc. straight wgt. oil then timed how many drips/min. I then compared it to the same amount of used shock oil, from there I was able to derive what wht shock oil I need (there are quite a few) BTW you cant become an expert without trying....
'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60
'01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust,
'05 Dodge Magnum R/T - Too Much to list
'60 Willys CJ5
'01 International LPX - Project,DT466, Allison
'64 Plymouth Valiant, Inj 528 Hemi, 2spd
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