question about zddp additive

[Markus]

Hello guys,

will hurt such a zddp (zinc) additive o2 sensors


thank´s

Markus

 

[rbohm]

that is the reason zddp is being slowly eliminated from modern lubricating oils, it coats the O2 sensors rendering them in the end useless.

 

[Markus]

that is the reason zddp is being slowly eliminated from modern lubricating oils, it coats the O2 sensors rendering them in the end useless.

i thought it kills generally catalysts by a chemical raction

 

[65coupe408w]

who needs O2 sensors anyway...

 

[Realmongo]

who needs O2 sensors anyway...

That's right, real Classics don't need no steenkin O2 sensors!

 

[Hack]

It shortens the O2s life, but not dramatically. Unless you have bad valve guides or a worn out engine I wouldn't worry about ANY impact on O2 sensors life. There were many, many years of EFI engines that ran using oil with ZDDP in it. The reason for eliminating it in oil is not so clear to me. When the government says things that don't make a lot of sense to me I start thinking about the money trail.

Things like, "oh those cheap light bulbs that last for years and years are bad for the environment, but these mercury-filled bulbs that cost $6 each are much better for the environment."

Bastards.

 

[Markus]

It shortens the O2s life, but not dramatically. Unless you have bad valve guides or a worn out engine I wouldn't worry about ANY impact on O2 sensors life. There were many, many years of EFI engines that ran using oil with ZDDP in it. The reason for eliminating it in oil is not so clear to me. When the government says things that don't make a lot of sense to me I start thinking about the money trail.

Things like, "oh those cheap light bulbs that last for years and years are bad for the environment, but these mercury-filled bulbs that cost $6 each are much better for the environment."

Bastards.

Hack,

thank you for the qualified answer

Markus

 

[Realmongo]

Are you running a flat tappet camshaft with fuel injection?

 

[Markus]

Are you running a flat tappet camshaft with fuel injection?

No, hydraulic roller

 

[Realmongo]

I went with a roller block when I replaced the original engine in the '84, so I do not have to worry about haing to use an additive in that car. Shell has released a 10W-30 version of Rotella that meets the older SM rating that I am using in the 64-1/2 and 65 engines with flat tappet cams that require the protection the roller engines do not. The biggest concern of damage from the additive is to the catalytic converters.