Will it work for a 2007 Tundra 2wd rear dif?

I tried this is my 2007 Tacoma Prerunner with the mechanical limited slip diff and the clutches just wouldn't properly slip no matter how much friction modifier I added. I ended up throwing out some good money worth of oil and put cheap Castrol LSD gear oil in it and it worked fine. I don't think this is a bad product, Toyota differentials just do not like synthetic oil in some cases.

Will this work for toyota rav4 awd 2016?

Refer to your owners manual. IF the application (transmission/transfer case) states lubricant per GL5 then yes, it will work great. If GL4 then look at Red Line ATF. NOTE: API GL classifications do not go up and down like motor oils (API SN may be used in SL spec engine). GL5 is totally different from GL4 and will damage synchronizer surfaces and or limited slip clutches if not applied correctly.

Will this viscosity provide adequate protection for a 1971 C10 daily driver?

I noticed a difference when I changed mine out to this. I just used their mt90 for my manual transmission and it made a huge difference

Lexus gs 350awd says 1.4qt 75w85 for rear and .7qt 80w90 for front diff. can i use this for both? have a bit of 80w90, can just buy 2 bottles.

I would recommend staying with the fluid recommended by Lexus. If it were me, I would buy one of each fluid required.

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🛠️ Gear up with Red Line: The ultimate synthetic edge for your differential’s peak performance!

WIDE OEM COMPATIBILITY - Engineered for late-model BMW, Ford, Jeep, Lexus, Mercedes-Benz, Toyota, and more—future-proof your ride.
EXTENDED DRAIN INTERVALS - Superior oxidation resistance means longer-lasting protection and fewer oil changes, saving time and money.
BUILT IN LSD COMPATIBILITY - Includes friction modifiers tailored for clutch-type limited slip differentials—no extra additives needed.
PRECISION VISCOSITY CONTROL - Maintains optimal gear film thickness across extreme temperatures for smooth, reliable performance.
RACE PROVEN SYNTHETIC FORMULA - Polyol ester base stocks deliver unmatched lubrication under high pressure and heat, trusted by Formula racing teams.

Red Line 50104 is a fully synthetic 75W85 GL-5 gear oil engineered with polyol ester base stocks and friction modifiers to optimize performance and protection in hypoid limited slip differentials. It offers superior shear stability, oxidation resistance, and viscosity control across temperature extremes, making it ideal for many late-model vehicles and high-performance applications. Designed to extend drain intervals and improve differential efficiency, this gear oil is a trusted choice for both street and racing use.

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Manufacturer	Red Line
Brand	Red Line
Model	50104
Product Dimensions	10.16 x 10.16 x 10.16 cm; 907.18 g
Item model number	RED50104
Manufacturer part number	50104
OEM Part Number	50104
Item Weight	907 g
Viscosity	Lightweight

Red Line (50104 75W85 GL-5 Full Synthetic Gear Oil For Hypoid Limited Slip Differentials - 1 Quart

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