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Z D D P

I think I am ok with my oil choice:

157. 20W50 Kendall GT-1 High Performance with liquid titanium, API SN conventional = 83,365 psi
zinc = 991 ppm
phos = 1253 ppm
moly = 57 ppm
titanium = 84 ppm
 
Great thread and timely for me. NOT wishing hijack the thread but I just have broken in my new 440 engine with the high zinc oil and put about ten miles on it, WHEN do y'all change that break in oil out. I would assume the cam/lifter supplied lube also contain high levels of zinc as well as the higher levels in the special break in oils. Does the oil filter in use remove these levels during normal circulation and is that needed to be replaced. Seems some opinions here say yes, and some say no. How soon after break in do y'all suggest replacing that break in oil.
 
Wietse said:
I think I am ok with my oil choice:

157. 20W50 Kendall GT-1 High Performance with liquid titanium, API SN conventional = 83,365 psi
zinc = 991 ppm
phos = 1253 ppm
moly = 57 ppm
titanium = 84 ppm
Click to expand...

Gosh is Kendall GT-1 still available? I agree it was great when I used it in late '70's early '80's. Thought it was long gone. I understand PennGrade is the same though.
What is liquid titanium? Titanium is a metal not a liquid.
 
ZDDP and Molybdenum are required in earlier cars for their entire life. Zinc provides corrosion protection for cylindewr walls and the Moly provides added film strength and loading for bearings. Effective ZDDP use only takes place when it is blended in the base oil which is a complex emulsion. When you add as a separate additive it will separate quickly from the base oil and be rendered useless. By seperation thus only giving you a small portion of its value
 
Last edited:
So are you saying that oil additives such as Lucas and STP are useless?
 
I'll continue to be hard headed with my 50 year old engines and use conventional oil and ZDDP additive. Just to make sure.
 
If I recall the time line correctly fuel pump rods became a topic the same time wiped cams did.
 
IIRC, Joe Gibbs oil is over 1500ppm zinc. That is the brand I sell, and the only oil I use short of synthetic for our new vehicles.
 
Car #4 said:
So are you saying that oil additives such as Lucas and STP are useless?
Click to expand...

I've been using a bottle of STP at every oil change since I can remember and have NEVER had a problem! I'm sure some jack-rod will give me a red X. If it's good enough for Andy Granatelli and a race car, it's better for me to use on a street driver! I even throw a bottle in on a new motor for break in, never had a problem!
 
69a100 said:
I've been using a bottle of STP at every oil change since I can remember and have NEVER had a problem! I'm sure some jack-rod will give me a red X. If it's good enough for Andy Granatelli and a race car, it's better for me to use on a street driver! I even throw a bottle in on a new motor for break in, never had a problem!
Click to expand...
Here's another good additive that I use. It's not as thick as STP but has a lot of Zinc.

rislone-zinc-zddp-e1443532059691.png
 
Risloni with a splash of zambuca!

if the motor is built right you shoudn't need snake oil!
A friend had a 77 camaro never changed the oil for the entire time he had it 60K miles when he sold it!
last time i had a diesel built the builder told me use only mobil 1 for him to honor the warranty! I used 5/40 castrol for 5yrs. and then T6 for the last 6yrs. and it's still running, probably because he put the wrong pistons in 19/1's ,motor should have had 23/1's idiots i tell ya!I should have realized the problem right off the bat when the oil cooler ports were different size!motor was for a van not an HD truck! It smoked on start up since day one and he told me is wasn't broke in yet! I replaced every external componenet on that motor and it still smokes on start up! took me a while to figure it out, i was a green horn on diesels, just like him [the pro]
 
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