Hey all!

I was just wandering if any of you use or have used "molyslip" before in the PD130 vRS engine?

I am thinking of getting some but thought I would check up on here first

Any info would be great

When I was your age I chucked all sorts of cr@p into the engine,Molyslip,Slick 50,Forte engine flush,Redex.

As the years have passed I've stopped all that.Now I just get the best oil I can afford and change it regularly.

Thanks for the reply, but that doesn't really help me much

Sure the engine will run fine without it but I'm wondering weather it will help an old engine (132,000) run better

I suppose it cant do any harm right?

It's snake oil and will do nothing for your engine. It's full of Molybdenum Sulphide which will not bind with Vw505.01 oil properly.

It's snake oil and will do nothing for your engine. It's full of Molybdenum Sulphide which will not bind with Vw505.01 oil properly.

Ok thanks for the informative reply Moggy.

I wont be getting any of that then!

Oil companies spend large amounts of money , testing , research etc, fine tuning the complex blending of a great number of special additives that enhance their blend of engine oil, then along comes someone with no knowledge of any lubrication products and empties a can of "gunk" into it !

VAG work with the major oil companies to develop oils specifically for their engines and only approve products that are suitable. i.e. when the PD engines were introduced a special oil was also introduced that was suitable for the high camshaft loads that were a charcteristic of these engines. Only oils that were suitable for the PD engines were approved. Likewise special oils for VAG cars with DPFs were developed & approved.

I concur but to say that a company such as Molyslip which has been around since the 1950s has NO knowledge of any lubrication products is a little far fetched to say the least...

Saying that I will still heed Moggy's advice as he/she seems to know a lot about the vRS and its engine.

That's not to say it would not be of some benefit to some cars - even if it is just "snake oil"

I was referring to the person who put the "gunk" in, not the manufacturer . I have used Molyslip products over many years for things like CV joints , suspension joints etc. and found them very effective . But the days of the simple multigrade oil are long gone. Todays oil blends are very finely balanced to suit very specific requirements. Without extensive testing for adding products like molyslip to todays VAG spec oils , there is the very real danger of degrading some of the enhanced properties that the oil manufacturer has worked hard to create. It would take a lubrication industrial chemist to understand the complexities involved and make recommendations .

A few years ago there was a product called "Slick 50" that used a Teflon like additive to claim friction reducing properties to engine oil . Dupont the teflon manufacturer repeatedly denied these claims but the product still sold . US consumers now finally have got the message.The US stock Slick couldn't sell is now on sale here again and there are still some people who think it's the next best thing since sliced bread !

It works well in Morris 1000 diffs and gearboxes, where the tolerances between components can be measured in inches

Tolerances in modern engines and so tight, I wouldn't put anything but the recommended oil in there.

It works well in Morris 1000 diffs and gearboxes, where the tolerances between components can be measured in inches

I spent a fortune in additives trying to silence the diff on my Triumph Toledo - until I found a handful of sawdust worked almost as well

I spent a fortune in additives trying to silence the diff on my Triumph Toledo - until I found a handful of sawdust worked almost as well

hehe simpler times

I spent a fortune in additives trying to silence the diff on my Triumph Toledo - until I found a handful of sawdust worked almost as well

:rofl: I used to use banana skins

Its hard not be sucked in sometimes though. I came across a stash of Activ8 at work, and was tempted, especially after seeing this video...

Also found this one:

An extra 4hp for £20

Its hard not be sucked in sometimes though. I came across a stash of Activ8 at work, and was tempted, especially after seeing this video...

Also found this one:

An extra 4hp for £20

exactly - very temping. I am all for getting more performance for little cost and this seems like a good deal

But if its true what Moggy said about it not bonding with the vRS oil properly then it sounds like it could do more damage then good....

hmmmmmmmmmm :think: :wonder:

Edited 16 May, 201016 yr by Thirdtimeluck

Youtube for the fifth gear test of a few products, octane boosters and different things. All brand name stuff, STP, Forte etc you'd pick up on the shelf in Halfords.

They took the products to an engine test factility where they had a Rover k-series engine on a test rig hooked up to a variety of monitoring equipment. They ran 5 litres of only petrol through the engine between tests for however long it took to flush, then they did a tank of petrol with each additive in turn.

The end results for all the products which claimed increased power were between -2% and -4% decrease in power.

From what they presented, it seems like the tests were done just about as fairly as you could reasonably imagine -- ideal test conditions really. Still though, none of the products worked and all harmed performance.

Wouldn't touch the stuff in a modern engine anyways but was nice to see someone approaching it in a respectable manner.