Red Line 58204 Heavy ShockProof Gear Oil - 1 Quart

Used to have a crunch sometimes when changing into 3rd or 4th, since putting this stuff in my 850hp r33gtr I’ve not had one missed change even when hard launching at santapod raceway.

No need to say anything about this. Used all over the world where you need the best protection and maximum strength, there is no better. I use it in BMW shaft drive final drives and boxer gearboxes. Ideal for use in BMW R1200GSA or GSs that travel heavy and run for long periods at high speed or in very hot climates.

This is gearbox magic. I race my Honda DC2 way too regularly :) and far too aggressively if I'm honest. It used to have a 3rd gear synchro crunch and after doing a fluid change and adding this magic stuff it's totally cured it (18 months in) still no crunch. The box and gear changes are brilliant

Huge improvement, this oil is transforming the bike

Very happy with this worked well

this is my second order, great seller. great item

Used in Moto Guzzi rear drive on Triking

good buy

This is very good for Harley transmissions. Shifts smooth. Easy to find neutral.

Questo olio per differenziale è veramente fantastico e mantiene ciò che promette. E' bene ricordare che è un olio per differenziale e non va usato nei cambi con sincronizzatori. Leggere le indicazioni di utilizzo e la scheda tecnica, sono chiare e ben fatte.

My 3rd gear synchro was failing and grabbing and gridning getting in to gear, after a bit of reading I decided to try this and it fixed my gearbox and saved me $1000s.

The best lube for Harley-Davidson Transmissions , quiets shift & makes finding neutral effortless!

Used this in my 1999 Subaru Impreza Outback Sport with noisy front and rear differentials. I threw some mobil0-1 75w-90 in each diff for about 1k miles to rinse things out. Just dropping the beat-up, dark diff fluid and going to Mobil 1 was a marked improvement alone. After running that sacrificial fluid for 1k miles, I drained it (and it was in much better shape, but still appeared QUITE DIRTY) and installed some Lucas full synthetic 75w-90 gear oil with about a half of the Heavy Shockproof quart going into the front and a half going into the rear diff. I put the Redline in first so it would mix better. Both my front and rear differentials are OPEN (not LSD; if you have an LSD, DO NOT USE this redline shockproof series). Immediately, I noticed that the diffs were notably quieter and that the car even accelerated and coasted more easily than even with the mobil-1 gear oil. I used the heavy shockproof because I'm in Florida and it never gets very cold here (it dips below freezing for a few hours, a few nights of the year, but only just below). If you are not in a southern state (FL, Texas, AZ, NM, LA, etc), I would advise selecting the lightweight shockproof instead. Overall, I'm extremely satisfied. If you have an open diff, or an air locker (anything but an LSD), you owe it to yourself to add a portion of shockproof to your diff. Quieter means cooler. That's always a good thing. Also, NEVER add this to any transmission. Even a manual. Your synchros will be permanently too slippery to work properly.