Question?

[Dog]

What will happen if you put a bottle (4 measures) SPT lead replacement into an unleaded car.

[Dark Sotonic Mills]

I know if you put leaded petrol into a car with a catalytic converter you have just shot yourself in the foot to the tune of a couple of grand.

[Red&White]

What will happen if you put a bottle (4 measures) SPT lead replacement into an unleaded car.

You are probably going to be ok, know somone who did this and had no probs.
Worth having a google though.

[Dog]

I know if you put leaded petrol into a car with a catalytic converter you have just shot yourself in the foot to the tune of a couple of grand.

How long will it take to blow up?

[Dark Sotonic Mills]

STP Lead Substitute, which is phosphorous based

Poisoning

Catalyst poisoning occurs when the catalytic converter is exposed to exhaust containing substances that coat the working surfaces, encapsulating the catalyst so that it cannot contact and treat the exhaust. The most notable contaminant is lead, so vehicles equipped with catalytic converters can only be run on unleaded gasoline. Other common catalyst poisons include manganese primarily from the gasoline additive MMT, and silicon which can enter the exhaust stream if the engine has a leak allowing coolant into the combustion chamber. Phosphorus is another catalyst contaminant. Although phosphorus is no longer used in gasoline, it (and zinc, another low-level catalyst contaminant) was until recently widely used in engine oil antiwear additives such as ZDDP. Beginning in 2006, a rapid phaseout of ZDDP in engine oils was begun.
Depending on the contaminant, catalyst poisoning can sometimes be reversed by running the engine under a very heavy load for an extended period of time. The increased exhaust temperature can sometimes liquefy or sublimate the contaminant, removing it from the catalytic surface. However, removal of lead deposits in this manner is usually not possible due to lead's high boiling point.

[Dog]

STP Lead Substitute, which is phosphorous based

Poisoning

Catalyst poisoning occurs when the catalytic converter is exposed to exhaust containing substances that coat the working surfaces, encapsulating the catalyst so that it cannot contact and treat the exhaust. The most notable contaminant is lead, so vehicles equipped with catalytic converters can only be run on unleaded gasoline. Other common catalyst poisons include manganese primarily from the gasoline additive MMT, and silicon which can enter the exhaust stream if the engine has a leak allowing coolant into the combustion chamber. Phosphorus is another catalyst contaminant. Although phosphorus is no longer used in gasoline, it (and zinc, another low-level catalyst contaminant) was until recently widely used in engine oil antiwear additives such as ZDDP. Beginning in 2006, a rapid phaseout of ZDDP in engine oils was begun.
Depending on the contaminant, catalyst poisoning can sometimes be reversed by running the engine under a very heavy load for an extended period of time. The increased exhaust temperature can sometimes liquefy or sublimate the contaminant, removing it from the catalytic surface. However, removal of lead deposits in this manner is usually not possible due to lead's high boiling point.

Meaning?? Thrash the crap out of it?

[Red&White]

Meaning?? Thrash the crap out of it?

No don`t do that !
How about talking to someone at STP or drain the fuel ? I know it`s a pain but you don`t want to bugger your car up.

[Dog]

No don`t do that !
How about talking to someone at STP or drain the fuel ? I know it`s a pain but you don`t want to bugger your car up.

Too late, I've used up the whole tank, filled up again today. i think I'll just grin and hope for the best.

[hamster]

Are any of these additives like Redex actually worth the money?

I can't remember what substance it is, but there is an off the shelf product that is supposed to give you an extra 10-15% power. Would it be Celulose (sp) thinners perhaps?

[Red&White]

Too late, I've used up the whole tank, filled up again today. i think I'll just grin and hope for the best.

Just had a chat with a mechanic mate of mine...he reckons you will be ok so fingers crossed atb ;)

[Somewhere In Northam]

Are any of these additives like Redex actually worth the money?

I can't remember what substance it is, but there is an off the shelf product that is supposed to give you an extra 10-15% power. Would it be Celulose (sp) thinners perhaps?

nitrous oxide?

redex works by flushing all the ****e out of your cars injectors, for "power" gains your car would have to be:

a)****ing old

b)****ing knackered

[Son of Bob]

nitrous oxide?

redex works by flushing all the ****e out of your cars injectors, for "power" gains your car would have to be:

a)****ing old

b)****ing knackered

What he said.

Having run many variations on the Golf GTi theme, eg: mk1,2 & 3 GTi's and early Sciroccos, the car needs to be over 10 years old or have a high mileage to benefit.

A bottle of STP in a 200,000 mile GTi can work miracles but will do little or nothing to any modern motor in the way of a performance gain.

[Ponty]

Why would anyone put STP lead replacement in a car that runs on unleaded anyway?

I can't believe nobody has asked...

[Dark Sotonic Mills]

Why would anyone put STP lead replacement in a car that runs on unleaded anyway?

I can't believe nobody has asked...

We didn't need to ask. Look who started the thread...

[Dog]

Look, we all make mistakes in life, and that was my time to commit. I did it not thinking after a night of heavy drinking.

[Dog]

We didn't need to ask. Look who started the thread...

:smt023

[Red&White]

Look, we all make mistakes in life, and that was my time to commit. I did it not thinking after a night of heavy drinking.

Hey you sure you didn`t drink the STP ?:D

[Son of Bob]

Why would anyone put STP lead replacement in a car that runs on unleaded anyway?

I can't believe nobody has asked...

I was working on the assumption that Dog had inadvertantly purchased it believing it to be injector cleaner.