Minggu lalu main ke bebong, disana cuman tinggal sisa 1 botol @ 1 liter.
Kalau om ke GIIAS mampir aja ke booth nya PTT, tanya kira2 estimasi masuk nya lagi kapan.
The Difference between GL-4 and GL-5 Gear Oils
Bacaan menarik mengenai pemakaian GL-5 Gear oil di transmisi/gearbox (perseneling) yang meminta spec GL-4, dapat menyebabkan synchronizer nya rontok.
Berikut kutipan nya:
When we use a GL-5 product in a transmission that requires GL-4, we normally find 2 to 4 times as
much copper in the used oil as we would with a GL-4 product (with used oil analysis). Eventually the
synchronizers wear to the point that they no longer make contact with the other half of the cone,
bottoming out before stopping the opposing gear. (Refer to the picture below.)
• Too much additive may reduce the wear on gears, needle bearings, and shafts in certain
conditions, but will wear out your synchronizers. You need to look for a GL-4 oil that does not
include GL-5 in its label, even though it looks good, even though it claims GL-4/GL-5 on the
label. The Corvair differential is well built with parts much bigger than those of many cars
today. Those gears can carry the power of the car. You can see in the following picture of a
Toyota synchronizer how the brass synchronizer has worn so much that the entire ring bottoms
out and no longer grabs.Summary
Just remember that GL-4 and GL-5 are gear oil ratings, not transmission oil ratings. Transmissions
have gears and synchronizers. These seemingly conflicting requirements must be met differently.
When someone tells you that their GL-5 covers GL-4, remember they are correct as far as EP
protection, but that is only half the answer. When they say their Sulfur/Phosphorous additive will not
corrode the yellow metals, they are also correct, but if there are enough to meet GL-5 protection, they
will slowly peel away your brass synchronizers.