This is no endorsement, just an experience.
I had a 1972 Honda SL350 motorcycle that used a pint of oil every 300 miles.
I put in some oil w/teflon additive in the crank.
It stopped using oil.
I asked the vendor how this was possible.
He said I must have had a stuck oil ring on a piston that the teflon broke loose.
It also, made my wet clutch slip.

__________________
Steve Danville
what i did myself.
CPS
rear shocks
MAS x 3.
SparkPlugs (twice)
Fuel pump & Filter
Window switch
replaced both failed horns with Honda horns.
Cleaned ERG Tube
Oil changes
Oil consumption Fix
Brake Pads
A/C Recharge
Anti-Freeze change X 2.
Front Shocks. Monroe. $90
Mercedes Warrenty Work:
Harmonic balancer,power steering clamp. Cat converters.Drive Shaft Bearing.s
Replaced Outer Lower Tie Rods and front lower ball joints at 156,000 miles