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#999425 - 09/29/07 05:06 PM Oil for Onan Generator
CONMCK Offline

Registered: 05/09/04
Posts: 131
Loc: alberta
I have a 1992 Fleetwood Motorhome with a 4500 watt Onan generator. I need to change the oil and am looking for a recommendation. Specifically, is todays SM oils with reduced antiwear additives sufficient, or should I use a HD oil.

#999426 - 09/29/07 07:42 PM Re: Oil for Onan Generator [Re: CONMCK]
JTK Offline

Registered: 08/14/03
Posts: 8029
Loc: Buffalo, NY
Shell Rotella-T 5w-40 would be an excellent choice for cold winter or hot summer usage.

2014 Subaru XV Crosstek 2.0L, 5spd, 2013 Dodge Grand Caravan SE (Babe magnet III)

#999427 - 09/29/07 11:10 PM Re: Oil for Onan Generator [Re: JTK]
Brett Miller Offline

Registered: 09/09/03
Posts: 2636
Loc: Arizona
Rotella 5W-40, Amsoil ACD, Amsoil ASE or good old Pennzoil HD-30.

#999428 - 09/29/07 11:29 PM Re: Oil for Onan Generator [Re: CONMCK]
Camu Mahubah Offline

Registered: 02/04/05
Posts: 3048
Loc: the Sandhills of Nebraska
Formula 4-StrokeŽ 10W-30/SAE 30
Synthetic Small Engine Oil (ASE)
A commercial grade formulation designed for hot temperature, severe service operation of small engines where routine maintenance is often difficult or infrequent. Recommended for use wherever SAE 10W-30 or SAE 30 oil is specified in gasoline or diesel engines, transmissions, hydraulics, and chain cases requiring the listed specifications. Applications include maintenance equipment, tractors, lawn and garden equipment, generators, compactors, pumps, light towers, welders, log splitters, power washers, cement mixers and trowels, skid-steers, excavators and compressors.

#999429 - 09/29/07 11:30 PM Re: Oil for Onan Generator [Re: Camu Mahubah]
Camu Mahubah Offline

Registered: 02/04/05
Posts: 3048
Loc: the Sandhills of Nebraska
The above post is from the Amsoil site. Make sure you buy from one of our sponsors. I have it and intend on running in a lawnmower next season.