We would be glad to help you with your question. Where did you read microgel? it might be just a commercial name for a certain type of additive-particles in a grease.
Where did you hear about GPF? these seem to be a slang from certain lube manufacturer. Please write more information what do you want to accomplish in what device.
Two Shell products: Aero Shell NO.5 Microgel 矿物(Mineral) dropping point≥260 Consistency 282 Operating Temperature range ℃-10~+130 常温脂 normal temperature grease LG35
Aero Shell NO.7 Microgel 矿物(Mineral) dropping point≥260 288 Operating Temperature range ℃-70~+150 低温脂 low-temperature grease LG49