Anyone using Redline 'Heavy' Shock proof Gear oil?
12 March 2010, 04:08 PM
#2
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not tried that one mate, i have a similar thread running as i have used the redline MT90 as its classed as very good for the last car i had, but i am not sure if its suitable for the impreza? hopefully someone will let us know :-)
12 March 2010, 04:12 PM
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My bro is using it in his evo. He had a crunch into 5th gear but since putting the redline shock stuff in it's working great.
Don't see why it shouldn't be ok for an impreza.
Don't see why it shouldn't be ok for an impreza.
12 March 2010, 05:20 PM
#4
the reason i'm thinking of trying it is precisely that. I have a crunch in 4th when box gets hot. I was in the process of ordering some but when speaking to the salesman on the phone he completely discouraged me from using it saying it was only for drifting and hard race application and would be hard to change gear when the car was cold? But is it really that heavy.
i've read many mixed opinions on the stuff. Some people saying it cured notchy and crunching boxes and can't recommend it enough, and others saying stay well clear- 'it took me three oil changes to get rid of it properly'.
I know the lighter version is said on Redlines website to be 'unsuitable for most synchro boxes'.
12 March 2010, 06:09 PM
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12 March 2010, 06:09 PM
#7
the reason i'm thinking of trying it is precisely that. I have a crunch in 4th when box gets hot. I was in the process of ordering some but when speaking to the salesman on the phone he completely discouraged me from using it saying it was only for drifting and hard race application and would be hard to change gear when the car was cold? But is it really that heavy.
i've read many mixed opinions on the stuff. Some people saying it cured notchy and crunching boxes and can't recommend it enough, and others saying stay well clear- 'it took me three oil changes to get rid of it properly'.
I know the lighter version is said on Redlines website to be 'unsuitable for most synchro boxes'.
i've read many mixed opinions on the stuff. Some people saying it cured notchy and crunching boxes and can't recommend it enough, and others saying stay well clear- 'it took me three oil changes to get rid of it properly'.
I know the lighter version is said on Redlines website to be 'unsuitable for most synchro boxes'.
I guess that was me or Guy that put you off. The heavy Shock is equivalent to a 75w-250 when up to temp so can be really stiff when hot, but Impreza gearboxes are designed for a 75w-90, making the lightweight shockproof a better choice. The bit about synchros is just covering ours and Redlines ***** as technically it's not for synchro boxes, but no one has reported a genuine problem with it and we've sold loads to evo, subaru and skyline owners.
The Millers CRX75w-90NT is also worth a look as it's a similar thing to the Redline
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12 March 2010, 06:27 PM
#8
I guess that was me or Guy that put you off. The heavy Shock is equivalent to a 75w-250 when up to temp so can be really stiff when hot, but Impreza gearboxes are designed for a 75w-90, making the lightweight shockproof a better choice. The bit about synchros is just covering ours and Redlines ***** as technically it's not for synchro boxes, but no one has reported a genuine problem with it and we've sold loads to evo, subaru and skyline owners.
The Millers CRX75w-90NT is also worth a look as it's a similar thing to the Redline
The Millers CRX75w-90NT is also worth a look as it's a similar thing to the Redline
What do you think for a crunch when gearbox is hot. it's only started since having a gear oil change done 3 months ago. oil used was motul 300 75/90. i immediately thought the gear change was harder notchier - although i pressume this is to do with it being new oil?
Last edited by apac; 12 March 2010 at 06:31 PM.
12 March 2010, 06:58 PM
#9
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thanks oilman :-) i have low oil in my gbox ~(posted in another thread) and was looking for a good replacement. Do you stock the Redline above and could you please offer me a quote with members discount?
many thanks for your time mate
12 March 2010, 07:05 PM
#10
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i used it in my 5 speed and it was fine when cold and good when hot i met a guy of here once who used the ligth weight stuf in six speed but he was running 500bhp
12 March 2010, 07:14 PM
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OK so I just need a little clarification here because I made my oil supplier import the Redline Lightweight Shockproof as it was recommended on a website for my car as an upgrade oil above castrol syntrax (I think it was on the opie oils website, correct me if I'm wrong), they also stock the Redline Super Lightweight Shockproof, and the Redline 75W-90.
Somehow I feel a bit drawn to the lightweight and their 75W-90 in the gearbox, but just need some clarification on these different products hopefully from you oilman or really anybody else that knows.
Somehow I feel a bit drawn to the lightweight and their 75W-90 in the gearbox, but just need some clarification on these different products hopefully from you oilman or really anybody else that knows.
12 March 2010, 07:26 PM
#14
OK so I just need a little clarification here because I made my oil supplier import the Redline Lightweight Shockproof as it was recommended on a website for my car as an upgrade oil above castrol syntrax (I think it was on the opie oils website, correct me if I'm wrong), they also stock the Redline Super Lightweight Shockproof, and the Redline 75W-90.
Somehow I feel a bit drawn to the lightweight and their 75W-90 in the gearbox, but just need some clarification on these different products hopefully from you oilman or really anybody else that knows.
Somehow I feel a bit drawn to the lightweight and their 75W-90 in the gearbox, but just need some clarification on these different products hopefully from you oilman or really anybody else that knows.
A unique gear oil designed to lubricate racing transmissions and transaxles which see serious loads (not recommended for most syncro-type transmissions). It has excellent low-temperature flow which allows easier shifting when cold. May be used to obtain maximum power transfer in racing differentials which do not see high temperatures. Similar to a 75W140 gear oil, but with the lower internal friction of an SAE 30 motor oil.
12 March 2010, 07:52 PM
#15
Oilman, my 17yo 5-sp seems in good health... except... that if you try to do a quickish 1st-2nd change when the oil's hot (possibly cold too), then it does seem to beat the syncro and graunches a bit. I know this is prob to be expected of such an old box, but are there any gear oil products that you recommend to help alleviate this symptom? Will any of the aforementioned oils work? And can they be used in the rear diff too?
Or shall I just bung some sawdust in?
Oilman, any comment on the above?
Or shall I just bung some sawdust in?
Oilman, any comment on the above?
Last edited by joz8968; 13 March 2010 at 07:45 PM.
12 March 2010, 08:05 PM
#16
Oilman, my 17yo 5-sp seems in good health...except... that if you try to do a quickish 1st-2nd change when the oil's hot (possibly cold too), then it does seem to beat the syncro and grauncges a bit. I know this is prob to be expected on such an old box, but are there any gear oil products that you recommend to help alleviate this symptom? Will any of the aforementioned oils work? And can they be used in the rear diff too?
Or shall I just bung some sawdust in?
Or shall I just bung some sawdust in?
as always, you hear lots of conflicting views. I've searched this subject on several forums inc. subaru and others and there are positive and negatives in all cases.
I'm sure that an oil supplier will say that crunchy boxes can be cured with a good cough mixture, , but drivetrain surgeons will say that you need open heart surgery to replace weak parts
Last edited by apac; 12 March 2010 at 08:07 PM.
12 March 2010, 10:17 PM
#20
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my advise , do not put that in your box way to thick and will aggregate your problem more plus on really cold mornins it makes gear selection hard , try some castrol driveline may help it a little but too save in the long run stop pushing the car to make it crunch else you will damage the gear/sleeve/selector fork and all is very expensive if your lucky you may just need the syncro changing . i done exactly as you did and left it and paid the expensive way .
by changing the oil your just masking the problem for a little while
by changing the oil your just masking the problem for a little while
13 March 2010, 07:42 AM
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13 March 2010, 06:29 PM
#24
thanks for the informed replies. It was not you by the way or your company, but incidently i was recommended the redline NS instead or MLT90 - i think it was?
What do you think for a crunch when gearbox is hot. it's only started since having a gear oil change done 3 months ago. oil used was motul 300 75/90. i immediately thought the gear change was harder notchier - although i pressume this is to do with it being new oil?
What do you think for a crunch when gearbox is hot. it's only started since having a gear oil change done 3 months ago. oil used was motul 300 75/90. i immediately thought the gear change was harder notchier - although i pressume this is to do with it being new oil?
Hmmmm, bit weird that one.The Gear 300 is usually good at sortting crunches, not the best, but better than most oils.
Lee at Redline knows his stuff so the 75w-90 NS could be worth a go.
Another good one in Subarus id the Castrol Syntrax. It's not the highest spec gear oil, but they seem to love it
Castrol Syntrax Universal 75w-90 semi-synthetic gear oil
Cheap at the moment too
13 March 2010, 06:43 PM
#26
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OK so I just need a little clarification here because I made my oil supplier import the Redline Lightweight Shockproof as it was recommended on a website for my car as an upgrade oil above castrol syntrax (I think it was on the opie oils website, correct me if I'm wrong), they also stock the Redline Super Lightweight Shockproof, and the Redline 75W-90.
Somehow I feel a bit drawn to the lightweight and their 75W-90 in the gearbox, but just need some clarification on these different products hopefully from you oilman or really anybody else that knows.
Somehow I feel a bit drawn to the lightweight and their 75W-90 in the gearbox, but just need some clarification on these different products hopefully from you oilman or really anybody else that knows.
But oilman can you give me a response on this please as I would really love to get your views on the matter as my car is due for service very soon.
And in the quote above that should have been lightweight in the gearbox and 75W-90 in the diff.
Really looking forward to your response.
13 March 2010, 06:59 PM
#28
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THANKS A LOT oilman! I'll go with that then. What about the diff though? again all I have available is Redline 75W-90, Redline super lightweight shockproof, Redline lightweight shockproof, and Royal Purple 75W-90 and 85W-140.