Generac brand motor oil?

[Ricky_Samsonia]

I have a Generac Gaurdian 17k portable with 200 hrs and been using Mobil 1 High Mileage 10w30 Syn yr-round here in the deep south.
But would Generac Syn 10w30 be any better at all?
Or would a straight 30w be better for the high heat here?

 

[LotI]

I would think the Mobil is one of the best choices for the price.

Many(most?) synthetic 10w30 oils don't use VII's so they are a great choice. The base oil is what gives it a 10w rating. I don't think I've ever seen a SAE30 synthetic because of this property of synthetics.

 

[Dwight_Frye]

I have a stationary Generac 17 kw generator that is hard wired to my house. The manual calls for 5w30. Temps can get down into the 20's in the winter and 90's in the summer here although I have never had it kick on during the summer months other than as part of the self-testing program that is does. I use Castrol 5w30 Magnatech full synthetic that I found on sale for about $17 for a jug.
What weight does your manual call for for a portable unit ?

 

[FT92]

have had a generac 5000 w portable for several years now...if I remember right the manual said to use 10 - 30 synthetic after yearly oil changes all is well

 

[PowerSurge]

Already answered your post in the other thread.

 

[benjy]

typical group III fake synthetic 10-30 is a good choice, BUT real synthetic PAO + Ester oils advertised as a 30W meet the 10-30 spec WITHOUT any viscosity improvers, but since cost is about triple + its overkill as well it matters not

 

[Gokhan]

Run SAE 30 C*-4, 15w40 C*-4, 5W-40 C*-4, or 0W-40 CF & A3/B4 as I said in the other thread. 15w40 and 5W-40 will decrease the efficiency a little, but they're good for reducing the wear.

 

[tig1]

A friend is a Generac tech and he told me the instructor at the gen school advised using Mobil 1 5w30. He has a lot of customers that he services their Generac gens and he uses Mobil 1 5w30. Even though those generators are problem heavy, he has never had an issue with the internals of the engine.

 

[mattwithcats]

Shell Rotella T6 in either 5W-40 or 0W-40.

I use an oversize Wix 51516 oil filter...

 

[DC_Stewart]

I've had a 7500w Generac for about 10 years now and it always gets Mobil 1, 10-30. There is literally no visible engine wear.

 

[Indy2door]

I have a portable Generac generator, a standby Generac generator and a Generac powered Dixie Chopper. Never a problem with any of them.

 

[tundraotto]

Originally Posted by DC_Stewart
I've had a 7500w Generac for about 10 years now and it always gets Mobil 1, 10-30. There is literally no visible engine wear.


No argument on Mobil 1 10w30 being a good oil - just a question on: what is "visible engine wear"?