Green Kendall GT-1 Observations

[Red91]

I'm only 200 miles into this OCI, but I've already noticed two things about this oil in my car versus the Delo that was in it previously.

Firstly, the engine seems to operate a little smoother on the Kendall than with the Delo, so much so that I haven't felt the need to add any MoS2 this go around.

Secondly, it seems it might be a bit thinner than the Delo. Both are SAE 30, but my cold and hot oil pressure readings are slightly lower with the Kendall than the Delo, but not by much.

I cannot comment on consumption at the moment, but this engine has previously consumed no discernable amount of both QS 20W-50 or Delo 400 30 that were its two previous fills.

If anyone is interested, which I doubt you are, I'll be updating this on occasion.

 

[Olas]

It'll be interesting to see if the perceived smoothness lasts, it could just be the difference between old sheared stuff and fresh new stuff.
Slightly lower pressures could be good or bad - still in spec? If low pressure is more flow, and more flow helps with cooling, it might be what you want if too hot or it may not be what you want if you struggle to build/maintain temps.

To make the comparison fair you should add moly to the Kendall to have a closer match for the moly'd delo used last time round

 

[Red91]

Well see how it goes. The pressure differences are minimal at best. So far I'm liking it.

 

[doolah02]

Kendall is very good oil, I use the high mileage a lot. Hope you like it!

 

[Red91]

I appreciate that, but you know this isn't modern Kendall, right? This is the old green GT-1, API SJ.

 

[SR5]

Good to hear Red91, keep us all posted.

They are both SAE 30 oils, so a good comparison. Should be no shear problems with either.

Do you know what Group that old green GT-1 is ?

 

[Red91]

SonOfJoe seemed to think group 1.

 

[SR5]

OK, so a strong and shear free oil, but not a long OCI oil.

How long will you keep it in there ?

It should have lots of zinc too, and idea how much ?

 

[Red91]

Check out the VOA section. I had it analyzed and posted the results there.

 

[SR5]

Thanks .... Got it.

https://bobistheoilguy.com/forums/ubbthreads.php/topics/4310737/1

Zinc 1120 ppm
Boron 153 ppm

Viscosity (cSt 100C) 12.1

Base Number (mgKOH/g) 6.2

That's plenty of zinc, and the viscosity is at Euro A3 levels. Very nice.

 

[Red91]

I'm glad you like it. I'm pleased with it so far. Thanks for checking it out.

 

[Red91]

Put about a thousand miles on this interval, so I thought I'd post my promised update.

No discernable consumption and the color has become an amber shade. About the same color of the Delo when I poured it in.

The Kendall still seems smoother than the Delo did, and oil pressure is still consistent.

 

[BrocLuno]

Cool

 

[zeng]

Originally Posted By: Red91
Put about a thousand miles on this interval, so I thought I'd post my promised update.

No discernable consumption and the color has become an amber shade. About the same color of the Delo when I poured it in.

The Kendall still seems smoother than the Delo did, and oil pressure is still consistent.

...... from its ori greenish color , is that an indication of oxidation of base oil has begun ? IDK .

 

[mooferz]

Originally Posted By: zeng
...... from its ori greenish color , is that an indication of oxidation of base oil has begun ? IDK .

Probably just the dye burning off. Royal Purple and Valvoline VR1 also lose their colors by a couple thousand miles.

 

[bigt61]

Kendall GT-1 was the top dino back in the 80's - it had the nickname "green slime". I used it in my race cars for years before eventually switching to Mobil 1.

 

[Red91]

As mooferz said, just the green dye disappearing. I was told by SonOfJoe to keep watch on the color, as this formula has relatively low detergents, but so far its clean.

 

[Red91]

Thanks for your input, as I like hearing from folks who used it back in the day.