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View Full Version : Don't hate me for asking 88 Prostar


Chrisoswald
10-26-2012, 06:00 PM
So i acquired a 88 prostar over the summer. Love it. Putting her away for the winter and have been reading about zinc in the oil for older motors. The PO mentioned to me that I should use an oil with an adequate amount of zinc for my boat. Can someone recommend a brand and weight that fits the bill?

TxsRiverRat
10-26-2012, 06:06 PM
So i acquired a 88 prostar over the summer. Love it. Putting her away for the winter and have been reading about zinc in the oil for older motors. The PO mentioned to me that I should use an oil with an adequate amount of zinc for my boat. Can someone recommend a brand and weight that fits the bill?

Rotella 10w40

AZDave
10-26-2012, 06:14 PM
I am not sure Rotella still has a ZDDP additive. I have been using STP OIL Treatment with ZDDP

j.mccreight@hotmail.com
10-26-2012, 06:15 PM
Valvoline vr1 20w50 1400 ppm

Anything north of 1000 ppm is adequate.

JMann
10-26-2012, 06:19 PM
I use a standard oil of my choosing and put in a bottle of ZDDP additive. Or what ^^ said

mikeg205
10-26-2012, 06:59 PM
Valvoline vr1 20w50 1400 ppm

Anything north of 1000 ppm is adequate.

What he said ^^ plus I am pro-synthetic (oil discussion? bring it...lol...not really)

Synthetics hold up better in high temps - shear strength and flow. So Valvoline Synthetic VR1 20w50. With an older engine the water jacket ain't what it used to be...so the temps in the cylinders "may" getting a little hotter - so the synthetic will give you a bit more protection... if it's over kill on the spend...it's cheap insurance...plus it's a really cool blue color.

I would stay away from any motor honey like STP - even if it has ZDDP. I do put in Hyperlube...it was designed to be used in C&C machines for lubrication. Third party tests show it ain't snake oil... Thanks 03geetee for that find.

ok... I'm done pontificating...about oil.. ;)

Chrisoswald
10-26-2012, 09:47 PM
So if the oil has zinc weight % of 0.121 does that mean 1200 ppm?

03geetee
10-26-2012, 09:51 PM
What he said ^^ plus I am pro-synthetic (oil discussion? bring it...lol...not really)

Synthetics hold up better in high temps - shear strength and flow. So Valvoline Synthetic VR1 20w50. With an older engine the water jacket ain't what it used to be...so the temps in the cylinders "may" getting a little hotter - so the synthetic will give you a bit more protection... if it's over kill on the spend...it's cheap insurance...plus it's a really cool blue color.

I would stay away from any motor honey like STP - even if it has ZDDP. I do put in Hyperlube...it was designed to be used in C&C machines for lubrication. Third party tests show it ain't snake oil... Thanks 03geetee for that find.

ok... I'm done pontificating...about oil.. ;)

http://ecx.images-amazon.com/images/I/41Q%2BBFWCh8L._SL500_AA300_.jpg

He speaks the troooooof! I use this with Rotella 15w/40 and my dinosaur still roars.

JTR

j.mccreight@hotmail.com
10-26-2012, 11:44 PM
So if the oil has zinc weight % of 0.121 does that mean 1200 ppm?

Short answer yes it does,

mikeg205
10-27-2012, 10:11 AM
http://ecx.images-amazon.com/images/I/41Q%2BBFWCh8L._SL500_AA300_.jpg

He speaks the troooooof! I use this with Rotella 15w/40 and my dinosaur still roars.

JTR

Thread jack.... we should get a few bottles for the promotion of the product... ;)

now back to our thread...

east tx skier
10-27-2012, 10:33 PM
Valvoline vr1 20w50 1400 ppm

Anything north of 1000 ppm is adequate.

This, but I was under the impression that you wanted north of 1,200 ppm. Could just be past my bedtime.

east tx skier
10-27-2012, 10:34 PM
For what it's worth, my flat tappet Ford gets Valvoline VR-1 20W50.

mikeg205
10-28-2012, 10:50 AM
For what it's worth, my flat tappet Ford gets Valvoline VR-1 20W50.

Dino or Synth?

j.mccreight@hotmail.com
10-28-2012, 11:14 AM
Dino or Synth?
Both conventional and synthetic have 1400 ppm as a 20w50 version, mine the syn VR1

85912 85913

[QUOTE=east tx skier This, but I was under the impression that you wanted north of 1,200 ppm. Could just be past my bedtime.[/QUOTE]

1000ppm is adequate for stock engines, if camshaft is hotter than stock 1200ppm is necessary

mikeg205
10-28-2012, 11:25 AM
Both conventional and synthetic have 1400 ppm as a 20w50 version, mine the syn VR1

85912 85913



1000ppm is adequate for stock engines, if camshaft is hotter than stock 1200ppm is necessary

Sorry was wondering if EastTx preferred the Dino or Synth...I am a converted synth guy now...after reading about the differences...just my choice...

TRBenj
10-29-2012, 10:59 AM
This, but I was under the impression that you wanted north of 1,200 ppm. Could just be past my bedtime.
I would say that you are right on... north of 1200 ppm of both zinc AND phos are recommended for ALL flat tappet cam motors... stock or otherwise.

Valvoline VR1 (I use 20w50, but all VR1 weights have the high zddp levels)
Mobil1 15w50 (not all weights of Mobil1 have high levels of zddp... so this is a weight-specific recommendation)

^^2 good choices for flat tappet cam oils... I use both^^

JDC
10-29-2012, 06:04 PM
http://ecx.images-amazon.com/images/I/41Q%2BBFWCh8L._SL500_AA300_.jpg

He speaks the troooooof! I use this with Rotella 15w/40 and my dinosaur still roars.

JTRI found this at Pepboys on clearance for $4.45 a bottle, so I bought 2. ;)
FWIW, It's not a zinc additive. It's something different, but is supposed to have the same advantages. It's listed as "Better than zinc" and is safe for catalytic converters.

mikeg205
10-29-2012, 06:55 PM
I found this at Pepboys on clearance for $4.45 a bottle, so I bought 2. ;)
FWIW, It's not a zinc additive. It's something different, but is supposed to have the same advantages. It's listed as "Better than zinc" and is safe for catalytic converters.

It's a polymer ester... $4.45 a bottle - that's a steel... its a polymer ester that was designed for industrial use...

the data on this page is from http://www.hyperlube.com/c3/Zinc-Replacement-Additive-c7.html is from a product called ketjenlube.

pbgbottle
11-15-2012, 12:31 AM
i use the Mobil1 15w50

east tx skier
11-15-2012, 10:01 AM
Dino or Synth?

Dino. I save the synth for the vw.