Valvoline FlexFill Advanced Full Synthetic Full Synthetic 75W-90 Gear Oil 1 QT FlexFill

Super form of gear oil / Hyundai 6 speed DTC transmission fluid. This gets around using and contorting tubes and gravity for fluid replacement. This saved a bunch of time. Not only that, but it was much cheaper than the Hyundai OEM oil and had better certifications, and although it costs a little more than other equivalent fluids, their use in traditional bottles is much more laborious and less efficient. This saved a ton of time, effort, and then clean up. Super!!!

Great price, easy to use squeeze bottles, not a single drop on the ground. I will definitely buy again.

I've used Valvoline sythentic oil in many applications for over forty years. Valvoline is a top notch A+ grade lubricant, not some cheapo over-hyped and over-rated snake oil.I used this particular GL-5 rated sythetic (with limited slip additive) in a BMW E36, and it meets or exceeds all BMW requirements. Works great, and better protection than stock 75W-90 when driven hard, towing or in hot environments. Thanks to the limited slip additive, the pos-unit is smooth and gradual, not chattery. The limited slip additive is in the package, no extra costs or mixing required. NOTE: If you don't HAVE limited slip, no problem. The Valvoline limited slip additive is harmless to non-posi differentials, so you can use it in either application without any concern.Finally, a small but significant detail is that the Valvoline container style makes actually putting the lubricant into the rear axle of the BMW very very easy. No hoses or pumps required! Drain the old gear oil from the bottom port. Close it up and retorque the drain plug. Now, open up the top port and squirt the oil in with this squeeze style bottle. Retorque the fill nut, you're done.Works fantastic - didn't spill a drop, and absolutely no hoses or pumps required. A simple no-nonsense solution to what can be a messy problem, and a GREAT synthetic gear oil from a real old-school oil company - one that actually operates real refineries. (unlike so many other snake-oil style gear oils and engine oils, which come from people who don't own or operate actual refineries...I bet you didn't know that, eh? HINT: BMW, Mercedes, Audi, Amsoil, Royal Purple, etc. do NOT refine anything. They SPECIFY, and then real refineries make their product for them.) Just personal taste, but I'd rather buy from the source, as opposed to a vendor who bought it for me (with markup included, of course - plus advertising and marketing)Go Valvoline - you can't go wrong.

Long time user of this Valvoline gear lube.The squeeze flex package makes it very easier to fill gear boxes in tight locations !!!Absolutely a superb product for the price !!!

Worked real well filling differential - much better than hard bottles. Good price.

Did its job. Hugh quality oil with slip additive. Can’t speak on noise level since I used it for my rear differential. Overall it’s a good product it’s Valvoline. I use their oil for my truck so I’m a supporter of the brand.

So easy to use under vehicle. Just squeeze and fill up.

Absolutely Great! I used this in my rear differential that has a locker in it and normally it takes 5-10 seconds to engage even with new oil. But I put this in and for what ever reason it engages almost instantly. It has never done that before so I can say I am genuinely impressed. I will be buying again.