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#4467960 - 07/23/17 12:02 PM Today's STP
Camprunner Offline


Registered: 02/19/08
Posts: 1034
Loc: MA.
Just wondering what is in today's STP oil treatment? Is it the same formula from years past? I recall my father putting in a blue can of STP years ago in his Ford 429 cid powered station wagon before towing his 6,000 pound camper back in the early 1970's.

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#4467970 - 07/23/17 12:18 PM Re: Today's STP [Re: Camprunner]
Linctex Offline


Registered: 12/31/16
Posts: 6178
Loc: Waco, TX
I think it's just viscosity improvers and a tiny bit of ZDDP.

It used to have a lot of zinc, and made a fair assembly lube. Not any more.
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(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4468007 - 07/23/17 12:57 PM Re: Today's STP [Re: Camprunner]
Panzerman Offline


Registered: 12/16/06
Posts: 4203
Loc: Port Orange, Florida
My Dad loved the stuff. Dumped in it everything. Bought it by the gallon. Never caused problems but I never thought it was a good idea dumping a thick goo in the motor.
Thought it would end up in the bottom of the pan.
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#4468011 - 07/23/17 01:04 PM Re: Today's STP [Re: Camprunner]
CourierDriver Offline


Registered: 12/27/09
Posts: 4958
Loc: Tn.
There must be miles on this topic in the archives ..............in here,,,but then again, I like MMO>>
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#4468017 - 07/23/17 01:09 PM Re: Today's STP [Re: CourierDriver]
Linctex Offline


Registered: 12/31/16
Posts: 6178
Loc: Waco, TX
Originally Posted By: CourierDriver
,,but then again, I like MMO>>

I put MMO in the gas, but not the oil.
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4468070 - 07/23/17 02:38 PM Re: Today's STP [Re: Camprunner]
MolaKule Offline


Registered: 06/05/02
Posts: 19042
Loc: Iowegia - USA
Originally Posted By: Camprunner
Just wondering what is in today's STP oil treatment? Is it the same formula from years past? I recall my father putting in a blue can of STP years ago in his Ford 429 cid powered station wagon before towing his 6,000 pound camper back in the early 1970's.


Which one?

I see three versions at WallyWorld, O'Reilley's, and Advance.

Send in a sample to Blackstone and see what elements it has in it.

It used to be mostly a very poor version of an OCP VII and thickeners.


Edited by MolaKule (07/23/17 02:40 PM)

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#4468084 - 07/23/17 02:53 PM Re: Today's STP [Re: Linctex]
AirgunSavant Offline


Registered: 07/22/15
Posts: 3772
Loc: MD
Originally Posted By: Linctex
Originally Posted By: CourierDriver
,,but then again, I like MMO>>

I put MMO in the gas, but not the oil.


I use it in the gas too for my ope.
It works well for that application.

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#4468382 - 07/23/17 08:34 PM Re: Today's STP [Re: AirgunSavant]
Donald Offline


Registered: 03/21/04
Posts: 20472
Loc: Upstate NY
Originally Posted By: AirgunSavant
Originally Posted By: Linctex
Originally Posted By: CourierDriver
,,but then again, I like MMO>>

I put MMO in the gas, but not the oil.


I use it in the gas too for my ope.
It works well for that application.


What is your criteria for knowing it works well for OPE?
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#4468543 - 07/24/17 12:21 AM Re: Today's STP [Re: Donald]
Linctex Offline


Registered: 12/31/16
Posts: 6178
Loc: Waco, TX
Originally Posted By: Donald
Originally Posted By: AirgunSavant

I use it in the gas too for my ope.
It works well for that application.


What is your criteria for knowing it works well for OPE?


Perhaps as a fuel stabilizer?
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4473268 - 07/28/17 06:29 PM Re: Today's STP [Re: Linctex]
simple_gifts Offline


Registered: 07/26/04
Posts: 11953
Loc: Middlesex County CT
Originally Posted By: Linctex
I think it's just viscosity improvers and a tiny bit of ZDDP.

It used to have a lot of zinc, and made a fair assembly lube. Not any more.


It might be 'just the opposite'

I bought some a few months ago to see if it would reduce my oil consumption.

I built one engine about 30 years ago and seemed to think it was a grey gooey additive when i used it 50/50 with oil as an assembly lube.

When I opened the blue bottle it was honey color and poured much faster; I'm thinking it is a ZDDP additive now.




Edited by simple_gifts (07/28/17 06:30 PM)
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#4477587 - 08/02/17 04:49 PM Re: Today's STP [Re: Camprunner]
Ram02 Offline


Registered: 05/13/17
Posts: 131
Loc: New York Queens
There new synthetic oil treatment looks like it should help with today's 0w20 motor oils
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