Gear Oil Formulation

[@sahedahsanabir8520]

Is GL 4 or GL5 gear oil good for the gear box and clutch system of two stroke bikes?

[@MikeyAlbertin]

Interesting. Yes complexity cause of different applications. Just like in a manual transmission with synchros. Some manufacturers will just recommend a special synchro fluid, a Gl-4 rated or one that is GL-4/5. Not so much of being corrosive to synchros but I know each fluid has different frictional properties that could effect synchro performance. JMHO

[@mytech6779]

Gl-5 is often avoided specifically because of the yellow metal corrosion, the GL5 standard was developed for hypoid differentials which need high EP loads and high shear strength because of increased sliding forces. But I do agree that friction modification is also a major consideration with anything that acts like a clutch, a syncro, limited slip differential, the wet clutch on many motorcycles.

[@lesliedsouza4077]

Good show :) Pl explain SN & Bright stock?

[@LubricationExplained]

Here you go Mr D'Souza: kzbin.info/www/bejne/gJergoSQapqGpZI

[@lesliedsouza4077]

@@LubricationExplained Thank you, Sir :) I had seen this, or similar vid, earlier - Just needed a refresher. So - You're saying that SN, is today's GII, Mineral, Base Oil? Bright Stock would be GII+ -- GIII? Depending upon hydro finishing process?

[@armedfarm3429]

How does ATF fluids do in a gear box, like rear diff's in 4 wheelers, are they good for light gear work??

[@snort455]

Great question! I need to know!

[@n.mcneil4066]

ATF is not used in differentials with hypoid gears. You'd use an API GL5 oil of the suggested viscosity. ATF is used in some standard transmissions with closer clearances between gears & shafts or bushings.

[@armedfarm3429]

@@n.mcneil4066 Thats well known. But I am talking about light duty, light load oil. Not a 7000 lb machine. Amsoil says a gl5 is not needed in a UTV/atv, Polaris does not use true Hypoids either, it's more of a bevel gear. I'm always looking for alternatives.

[@drnavinkiranmurty8458]

pl explain about fzg tests

[@LubricationExplained]

Working on it!

[@chippyjohn1]

You know what would be nice; is if oil manufacturers had a lube guide, but instead of one for already made uses it would be for custom applications. A drop down box, materials, bearings, clearances, temperature, speed, types of gears, type of lubrication etc. My gear box design is all steel gears with ball bearings and also chain drive (either silent or roller) some gears are high speed and load load others are high load and low speed. Am hoping to use the input gear as also the oil pump for oil squirters as it needs to lift oil 40cm and then trickle down. SO much design, but it is fun. Learning is the never ending puzzle.

[@parashsharma77]

Thank u sir

[@LubricationExplained]

Welcome!

[@mytech6779]

Pshh everyone knows worm gears need compounding with whale oil, about 20% co-base should do. It makes the oil "oilyer" for all that sliding. Also applicable to steam cylinders. (Actual old time info I picked up somewhere, though not word of mouth it was from an old engineering paper.)

[@LubricationExplained]

You're not far off the mark. There's plenty of cylinder oils still using tallow.