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Symbol for Degree of Necessity * - splurge a little ! ** - if you can afford it *** - nice to have or do **** - should have or do ***** - must have or do ! - good to upgrade at replacement !! - should be upgraded at replacement |
Code for Vehicle Rating 1 - essentially bone stock: trails up to 2 2 - + larger than stock tires, tow hooks front and rear: trails up to 2.5 3 - + aggressive tires 31 inches and larger; one axle with traction-aid device: trails up to 3.5 4 - + Locking differential on one axle: trails up to 4 5 - + aggresive tires 32 inches and larger & both axles with locking differentials: trails up to 4+ |
| Automatic Transmissions | transmission fluid
temperature gauge auxiliary or larger auxiliary coolers external replacement filter (adapters that can be inserted in transmission cooling lines and use Fram-type filters) helps in cooling & is far superior to OEM filter. drain-plugs in the drain pan - helps in changing transmission fluid, you won't have to replace drain pan gaskets. |
| Differential/Axle/T-Case | be
sure vent lines are properly installed and clear of obstructions run all axle/transfer case vent lines to a K&N filter or a canister with K&N filter can also be used as filtered crankcase breather
SYE kits ('slip yoke eliminator') - especially on lifted vehicles - prevents t-case fluid from leaking out when driveline is removed lower gears Lockers |
| Brakes | upgrade brakes |
| engine mounts | - upgrade to urethane |