Rislone Engine Oil Supplement with Zinc Treatment

M

Molson02536

New member
Joined
Dec 9, 2009
Messages
3,123
Reaction score
0
Points
0
Location
K/W Ontario Canada
Phosphorus (a component of ZDDP - Zinc Dialkyl-Dithio-Phosphate) is the key component for valve train protection in an engine, 1600ppm ( parts per million) used to be the standard for phosphorus in engine oil. In 1996 the EPA forced that to be dropped to 800ppm and then more recently in 2004 to 400ppm again.

Valve trains and their components are now wearing out faster and this drop in phosphorus content has been a problem for many engines (especially those with flat-tappet type cams). The the level in ZDDP dropped mostly of Money and it's the second most destructive substance to shove through a catalytic converter.

When the US government mandated a 150,000 mile life time on catalytic converters, the quickest way to do that was to drop phosphorous levels and bugger the valve train problem. Literally. GM Part Number 12345501 if you are interested in ZDDP additives, it's a 4oz bottle that will keep the engine happy in your small block.

Shell Rotella T 15w-40 has also maintained a very high level of phosphorus have at least 1400ppm which is not classified as energy/fuel conserving oils and thus do not interfere with the precious government CAFE (corporate average fuel economy) ratings. This also means that they don't get the coveted ratings of other oils but they do protect your valve train. The same rule of thumb is true for racing oils like Royal Purple - because they're not classified as energy / fuel conserving, it would seem they still contain good quantities of ZDDP.

In the US, Rislone manufacture an oil supplement to boost the ZDDP content of your existing oil. http://www.barsproducts.com/catalog/...treatment-4401. So if you don't want to change your engine oil weight from 5W-30 with only 400ppm ZDDP, you can always add a bottle of Ristone or as mentioned the GM part number 12345501 oil additive.

Just a little FYI for 2013

Molson02536
 
Last edited:
Good information, thanks! However something got goobered...what does this mean in the 2nd paragraph: " The the level in ZDDP dropped mostly of Money and it's the second most destructive substance to shove through a catalytic converter.

?
 
Last edited:
QuantumRift said:
Good information, thanks! However something got goobered...what does this mean in the 2nd paragraph: " The the level in ZDDP dropped mostly of Money and it's the second most destructive substance to shove through a catalytic converter.

?
Click to expand...

Simple terms, the oil companies don't add ZDDP into there oil as much as they used to and any oil that makes its way through the exhaust in forms such as blow by's or bad PVC valve ect will collect in the Catalytic converter and make it useless.

The government made it mandatory for the Catalytic converters to last at least 5 years so this is why there is no surprise to why the drop in the ZDDP came out about the same time.

This problem seems to be something GM has known about for some time and they say to add EOS, their oil fortifier, to your oil, it’s only about $12.00 for each oil change for an 8 ounce can.

For you science buffs: ZDDP is a single polar molecule that is attracted to Iron based metals. The one polar end tends to “Stand” the molecule up on the metal surface that it is bonded to by heat and friction.

This forms a sacrificial layer to protect the base metal of the cam and tappet from contacting each other. Only at very high pressures such as on a flat tappet cam is this necessary because the oil is squeezed/wiped from the surface. This high pressure is also present on the gudgeon pin (wrist pin) in diesel engines, therefore the need for ZDDP in diesel engines.

Second part of the equation is Molybdenum disulfide (Moly). The moly bonds to the zinc adding an additional, very slippery, sacrificial layer to the metal. But that too much of the moly will create problems and lack of this material reduces the effectiveness of the ZDDP. The percentage, by weight is from .01 to .02%, not much but necessary.

Hope this helps ;)

Molson02536
 
QuantumRift said:
yea I got the meaning of the catalytic converter info; it was the oddly worded phrase prior to that...

Also, how does this stuff work in motorcycles with wet clutches?
Click to expand...

Works great on keeping your engine lasting longer, especially your cam. The cam and lifters are not hydraulic and roller rockets and the cam wears out faster then they should.

You can get by with using a good grade diesel engine oil like Shell Rottella or Delco 15W40. They have what the engine needs.

Hope this helps

Molson02536
 
QuantumRift said:
Yea I was wondering about the Rislone. Since I don't have a cat, I found Rotella to be good oil in general; so I could use a bit of Rislone in my Mobile 1 Motorcycle oil..kewl.

thx!
Click to expand...

NO worries, i have a Catalytic Converter in all my toys and the way i look at it. It's cheaper to replace a Catalytic Converter then it is to replace a premature worn out engine. :D

Molson02536
 
You must log in or register to reply here.

Share this page



Back
Top