Slick 50

Submitted: Saturday, Mar 04, 2006 at 09:10
ThreadID: 31396 Views:5299 Replies:10 FollowUps:4
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Has anyone got any comments about using Slick 50 or other Oil additive in petrol/diesel engines, also in manual gearboxes.I know many years ago a lot of people sweared by them but do they really work or is it all hype.
Thanks in advance
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Reply By: Member - Doug T (QLD) - Saturday, Mar 04, 2006 at 09:29

Saturday, Mar 04, 2006 at 09:29
Matter of choice i suppose ,I think they are ok. Had an International T2670 semi 1980s and used Wynns in the gearbox and diff, 1,130,000ks i did and both were in it when i sold it.My Landcruiser G/box just just expired at 638,000ks with Nulon and or Wynns ,fonr diff can't coubt , it not used much but rear Diff was checked recently at 625,000 when i had a locker put in and they said crown wheel/pinion was fine.Now i guess it's up to's your car.
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AnswerID: 158487

Reply By: DesC - Saturday, Mar 04, 2006 at 09:59

Saturday, Mar 04, 2006 at 09:59
We had a series of planetaries that were failing in our line of work and we tried nulon, wynns, pro ma, slick 50. Whilst they definently extended the life of the planetary gears and bearings by nearly double and cooled the oil from 130c back to 90c we found that Mobil Synthetic gear oils increased 10 fold + the life of these problem planetaries. But synthetic oil is fairly xxy.
AnswerID: 158492

Reply By: Steve M - Saturday, Mar 04, 2006 at 10:37

Saturday, Mar 04, 2006 at 10:37
I do not believe these products are worth the money. As the previous post said you are much better off with a quality oil.

Whilst most of these products will do what they say they do, many have harmful side affects also, such as reduced oil flow, seal and o-ring damage. My H/d Mechanical TAFE lecturer also worked for CAMS and did a lot of testing of these products and did not like them.

With regards to a diesel engine I would be very cautious about additives. The last thing you want is to glaze the bores.

I am in 2 minds about teflon type products. See how easy it is to scape the teflon from your frypan, then image that in you bore. Having said that, I added some to an old GS1000S motorcycle engine years ago and it seemed to bring the compresion up quite a bit (a much reduced overrun time in neutral).

I would only use these products as a last resort.

Steve M
AnswerID: 158503

Follow Up By: arthurking83 - Saturday, Mar 04, 2006 at 14:28

Saturday, Mar 04, 2006 at 14:28
I reckon steve hit it on the head there with ....

"use them as a last resort"

Google will bring up lots of hits if you use the search "Snake oil lubricant additives"

like this....

snake oils ;-)
FollowupID: 413000

Follow Up By: warthog - Saturday, Mar 04, 2006 at 22:07

Saturday, Mar 04, 2006 at 22:07
I definitely wouldn't put them in any motorcycle with a wet clutch.
FollowupID: 413127

Follow Up By: Exploder - Sunday, Mar 05, 2006 at 00:37

Sunday, Mar 05, 2006 at 00:37
Like my old grandfather say’s, if the oil companies wanted the stuff in there oil they would of put it when they produced it.

Spent his working life working for Mobil, GM Holden and Honda.
FollowupID: 413142

Follow Up By: Steve M - Monday, Mar 06, 2006 at 11:19

Monday, Mar 06, 2006 at 11:19
Its OK to use Teflon based products in a motorcycle with a wet clucth PROVIDING the oil DOES NOT contain friction modifiers.

FollowupID: 413375

Reply By: Gu_Patrol - Saturday, Mar 04, 2006 at 11:09

Saturday, Mar 04, 2006 at 11:09
Thanks to all that replyed, I also did a search on this topic in EO and found some interesting info.
AnswerID: 158510

Reply By: F4Phantom - Saturday, Mar 04, 2006 at 11:22

Saturday, Mar 04, 2006 at 11:22
I used to love slick 50, recently I read about a court case where an independant Gov agency in the US found they were liars and they got a massive fine for the claims they make. The problem arises when credible people say it has worked so well for them.
AnswerID: 158515

Reply By: blown4by - Saturday, Mar 04, 2006 at 12:55

Saturday, Mar 04, 2006 at 12:55
I reckon all oil additives are a waste of money and agree that some even cause damage rather than actually prevent it. e.g. The ones that claim to cure oil leaks work by making the oil seals swell up so instead of having maybe to replace one oil seal to fix an oil leak you then have to replace all of them which if you are talking an auto trans may involve an expensive rebuild. I have only ever used good quality reputable brand oils and greases and changed them at the recommended intervals or prior and have never had a eng/tans/diff problem or even a failed wheel bearing in 36 years of driving including a lot of high mileage outback stuff and rallying in my younger days. The fact many of these mobs that promote additives put key dealership personnel on incentives that include fully paid holidays to luxury destinations indicates to me that these products are overpriced and of suspect value if they have to do that to sell the stuff. Sure some of them might assist in the short term to keep something running that has a problem but as far as I am concerned there is only one way to correct a mechanical fault and that is the hard way. The other problem with these products it that they are a bit like vitamin pills. At the end of the day you never know what good they did anyway because whatever you are putting the additives in may have run just as long without them or conversly failed prematurely anyway if it was assembled incorrectly or had the wrong machining tolerances when manuafactured. The words that The General used to print in all Holden car manuals alwats sticks in my mind and that is "that the use of such products only serves to increase operating costs".
AnswerID: 158533

Reply By: warthog - Saturday, Mar 04, 2006 at 22:11

Saturday, Mar 04, 2006 at 22:11
I put nulon g70 in my patrol gearbox and it made the gearchange worse. I reckon it stopped the syncro rings working as effectively.
AnswerID: 158639

Reply By: Patroleum - Sunday, Mar 05, 2006 at 00:11

Sunday, Mar 05, 2006 at 00:11
I tried the nulon G70 too - it was schitte! Tried it in the mid 90's in a pintara gearbox to try and reduce noise. Looks like a milkshake in your gearbox after a drive - all frothed up, didn't like it at all. Go excellent quality oils,coolants,greases,filters etc and change regularly is my policy.

All the best

AnswerID: 158653

Reply By: awill4x4 - Sunday, Mar 05, 2006 at 11:49

Sunday, Mar 05, 2006 at 11:49
Where's Bill S? I'm sure he'll tell us that his product will improve all the above and so much more. lol.
Regards Andrew.
AnswerID: 158686

Reply By: old mate - Sunday, Mar 05, 2006 at 12:41

Sunday, Mar 05, 2006 at 12:41
Oil additives are good when selling a car that is buggered. Ones that stop engine fuming and stops oil leaks are a temporay fix while you try to offload it.

In a good engine I use a good oil.
AnswerID: 158692

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