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Old 06-08-2011, 03:23 PM   #1
luvmygolden's Avatar
Winnebago Owners Club
Join Date: Mar 2011
Posts: 56
Onan Marquis 5500 Oil Question

Can anyone tell me if it's acceptable to use Mobil 1 Synthetic 10W-30 when I replace the oil in my Onan Marquis Gold 5500 Gen set?

Can't see where it would be a problem but figured I'd lean on the collective experience of this wise group to make sure.

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Old 06-08-2011, 03:26 PM   #2
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Newmar Owners Club
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Posts: 4,589
That's what I ran in my gas generator and I will be putting synthetic in my diesel gen. on the next change.

2007 Newmar DSDP 4023
Discovery is seeing what everyone else has seen and thinking what no one else has thought.
If you want to see what man made go East; if you want to see what God made go West.
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Old 06-09-2011, 11:54 AM   #3
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Location: Head of the Lakes, Minnesota
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I've used 10W-40 Amsoil synthetic oil in my Onan 5500 for many years.
FMCA# 266040 HRRVC# 84109
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