Wynns hydraulic lifter additive 76858 or 76864

[2Btoo]

Quickie,

Hydraulic tappets get tappy with higher mileage and Wynn's is great stuff to clean them out with. I'm a big fan.

BUT

I notice that they seem to sell two similar products: 76858 and 76864. The 76858 is slightly more expensive. Links as follows:

https://www.amazon.co.uk/Wynns-76864-Hydraulic-Lif...

https://www.amazon.co.uk/Wynns-76858-Hydraulic-Lif...

In short: what's the difference between them? And does anyone else do anything that's as good as the (more expensive) 76858 product?

Thanks!

[CraigyMc]

2Btoo said:

Quickie,

Hydraulic tappets get tappy with higher mileage and Wynn's is great stuff to clean them out with. I'm a big fan.

BUT

I notice that they seem to sell two similar products: 76858 and 76864. The 76858 is slightly more expensive. Links as follows:

https://www.amazon.co.uk/Wynns-76864-Hydraulic-Lif...

https://www.amazon.co.uk/Wynns-76858-Hydraulic-Lif...

In short: what's the difference between them? And does anyone else do anything that's as good as the (more expensive) 76858 product?

Thanks!

MSDS for each:
https://wynns2021.wpengine.com/wp-content/uploads/...
and
https://www.partinfo.co.uk/files/76858%20HYDRAULIC...

The W76858 appears to be simply a more recent version of the same thing. Whether either of them actually "works" is a totally different thing.

[2Btoo]

Thanks Craigy. That's what I suspected - that they are much the same.

I'll say that they do work (or the one that I have used, for sure). Rattly valve lifters in old Porsches are significantly much quieter after a dose of the stuff.

[CraigyMc]

2Btoo said:

Thanks Craigy. That's what I suspected - that they are much the same.

I'll say that they do work (or the one that I have used, for sure). Rattly valve lifters in old Porsches are significantly much quieter after a dose of the stuff.

Re: efficacy, fair enough.

While looking at this I found that they actually make other similarly named stuff you might want to look into?

--> Wynns Professional Hydraulic Valve Lifter Concentrate 325ml 76844 Oil Treatment
https://www.ebay.co.uk/itm/125128492579?mkcid=16&a...

--> WYNNS HYDRAULIC VALVE LIFTER CONCENTRATE 325MM VALVE TRAIN NOISE WY76844 x
https://www.ebay.co.uk/itm/323961796572?mkcid=16&a...

[austina35]

I'm not so sure. Noisy tappets is a sign of a worn camshaft. That comes from not changing the oil regularly.

[2Btoo]

It can be a sign of that, yes. But in engines with hydraulic tappets it can also occur when you get a build up of contaminants in the tappets themselves and they don't pump up as they should with the oil pressure. Using an oil additive to clean the engine before changing the oil can solve the problem.