Need help picking correct oil for my 25 year old 19hp twin Generac generator

[grsthegreat]

I read that Generac only makes RV generators now. And
Briggs & Straton has the others

willy

.?. What are you talking about.

 

[Williy]

I can't find were it said that. So
Generac is now back in the business
of manufactureing just like before they
sold?

Yes, in 2000, Briggs & Stratton purchased Generac Portable Products Systemsand renamed it Briggs & Stratton Portable Products Group, LLC (BSPPG).


Generac had previously sold its portable products division to the Beacon Group in 1998, who then sold it to Briggs & Stratton in 2001. Generac re-entered the portable generator market in 2008 after a non-compete agreement expired.

willy

 

[CalG]

What is the correct oil to use in my 25 year old 19hp, twin cyl, air cooled Generac generator. This is from the old days with higher ZDDP in the oil and I don't want to screw up my house generator with modern oil. The generator has test run more than actual use and only has maybe 15 hours of non-test use. So the rings aren't even seated yet.

Here's my engine, front ID tab and owner's manual oil requirement
View attachment 857278View attachment 857279 View attachment 857280
What I have been using is some ag gas engine oil that correct for the but is 30W and I want to go lighter like 10W30 or even synthetic for the winter. I could also use modern oil and just add a little ZDDP additive. I have done this with other gas engines and know the % mixture from company instructions

But, here's what I saw the other day in a shop but I know nothing of these oils. Does anyone know anything about these?
View attachment 857281

My plan at the moment is confusing. Should I just use modern synthetic gas engine oil if OK for rings seating, add a little ZDDP and call it good or go with a pre packaged oil as shown in the pictures? Are they really different? Any knowledge or help appreciated.

The "Correct oil" is what ever 10w-30 motor oil is on sale at whatever retail outlet is near you.

 

[grsthegreat]

I can't find were it said that. So
Generac is now back in the business
of manufactureing just like before they
sold?

Yes, in 2000, Briggs & Stratton purchased Generac Portable Products Systemsand renamed it Briggs & Stratton Portable Products Group, LLC (BSPPG).


Generac had previously sold its portable products division to the Beacon Group in 1998, who then sold it to Briggs & Stratton in 2001. Generac re-entered the portable generator market in 2008 after a non-compete agreement expired.

willy

Yes, generac makes their own standby and some portable units. Some of the portables are still made in china though. All the standbys are usa made.

 

[Williy]

It the items are make in China they are made to Generac's
spec's so its not some cheap manufacturing company

willy