Just How Good Is Redline Shockproof?

[D-limo]

Hi, my mate is contemplating finding a replacement box for his DR30 5speed wich has done 200 odd thousand k's.. Of course he would rather spend the money on performance upgrades as it's still relitively stock..

This thing crunches BAD into 2nd.. Although the last time the box oil was replaced is anyones guess, as the last owner seemed to think engine oil changes were'nt all that important

So does my mate find a good cond box for $500+

Or spend the $90 odd on this wonder oil and hope it patches things up for the moment?

Also is a diff oil change likely to tighten up the feel of a clutch pack LSD?

[AzzurrA]

if you can wait until monday or tuesday next week for an answer, i can tell you?

i have a 200,000km old gearbox, and am putting some redline lightweight shockproof into it on Sunday...

currently the gearbox is very notchy, and will crunch if you do a quick change high in the revs. Also whines a bit.

I'm hoping with the Redline oil, it will quieten down a bit and make changes a bit easier!

my diff also single-wheels alot, and whines like a bitch, as its just as old, and i am putting some Motul Gear300 into that to see how that goes... i'm not expecting it to fix it singlewheeling, though i'm hoping it might quieten it down a bit.

[Syphon]

Tell him to fill it with auto trans fluid and a little moreys heavy duty oil stabilizer. Apparently around 20-25% morey's, and the rest whatever oil you choose.

If that doesn't get it shifting, its time for a rebuild or replacement box

[Kinks]

if it's crunching that badly into 2nd then the synchro is gone, cactus.

redline oils may be fantastic but they're not miracle workers. if the box is shagged no oil in the world will rejuvenate it.

[AzzurrA]

if the synchro is gone, tell him how to learn to drive properly (i.e. flat shift on upchange, revmatch on downchange etc)

i've found with my box (it has dodgey synchros too i'm pretty sure, hence the crunching into gears at high revs/notchiness) that if i revmatch on downchange, it slots into gear nicely 99% of the time...

[dangerous_daveo]

Well I went from some standard oil to the redline stuff. Just because of changing jobs its harder to get to my mechanic etc.

It IS better, but its not like some people say where its gods love juice.

If you pull out the redline oil manual it tells you why its better. Its a thicker oil with all the additive stuff already in it all made to work with each other, so its effectivly thinner/more slippy. Just like putting in a thinner oil. Just with less protection.

So instead of spending allll that money on redline, just (as above) get some auto fuild, wack that in for a week. If it fixes it leave it in or go the redline, if its still crunching get the new gearbox.