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Old 06-05-2019, 09:59 AM   #1
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Looking for best advice on oil for V10 and Onan

Just getting ready to take delivery of our new Mint 2013 3010DS.

Doing online research, I have seen a wide range of "advice" on what engine oil to use in the V10. MFR says 5W-20, but opinions vary all over the place online. The rig currently has 23000 miles on it.

Can some of you please tell me what has worked best for you in the 6.8 V10?

Also, what weight oil are you finding best for the Onan 4000. (Currently with 130 hours total) We are currently stationed in Oklahoma, so wide temp ranges down to occasional teens in the winter and 100+ in summer.

Thanks!
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Old 06-05-2019, 11:23 AM   #2
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I used Mobil one on my 2019 3010ds. Says that i can change once a year. But i will change according to manufacturer guidelines.

Have not changed oil on my 4kw Onan yet.
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Old 06-05-2019, 11:32 AM   #3
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How would you know what oil works best for you? Follow the manufacturers recommendation. The Engineers that designed and built it know what it should use more than an owner who might only put 5-10,000 miles a year on it. The only way to know if an oil is "working" properly is to have samples of it tested. Any of the oils recommended by the manufacturer will work just fine.
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Old 06-05-2019, 11:33 AM   #4
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Quote:
Originally Posted by SunseekerFAMof6 View Post
I used Mobil one on my 2019 3010ds. Says that i can change once a year. But i will change according to manufacturer guidelines.

Have not changed oil on my 4kw Onan yet.
What weight did you use for the Mobil1? I DO like synthetics...especially Royal Purple.
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Old 06-05-2019, 11:44 AM   #5
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Manufacturers specs. Believe it was 5w20
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Old 06-05-2019, 12:29 PM   #6
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Quote:
Originally Posted by SunseekerFAMof6 View Post
Manufacturers specs. Believe it was 5w20
X2.... I used Mobil 1 5w20 in my 3010DS. Haven't changed oil in the Onan yet... that will be later in the summer.
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Old 06-05-2019, 01:01 PM   #7
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Fords are "notorious" for oil problems... V-10s are included in that. I am not saying there is anything wrong, before the haters begin. What I am saying is to follow OEM standards or BETTER on service. DO NOT use any product that does not meet or exceed OEM standards...regardless of brands. I like Shaeffers products, but if I owned a Ford I would prolly use the best Motorcraft oil available. YMMV
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Old 06-05-2019, 01:09 PM   #8
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Originally Posted by SittingElf View Post
MFR says 5W-20, but opinions vary all over the place online.
Thanks!
Opinions on motor oil are like navels, we all have one. The only correct recommendation is use what the owners manual says to use.
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Old 06-05-2019, 01:17 PM   #9
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Oil for V10

I have a 2010 6.8 V10 and the ford manual says use 5W- 20 Semi Synthetic. That's all I've ever used.
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Old 06-05-2019, 01:36 PM   #10
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Quote:
Originally Posted by Iwannacamp View Post
Fords are "notorious" for oil problems... V-10s are included in that. I am not saying there is anything wrong, before the haters begin. What I am saying is to follow OEM standards or BETTER on service. DO NOT use any product that does not meet or exceed OEM standards...regardless of brands. I like Shaeffers products, but if I owned a Ford I would prolly use the best Motorcraft oil available. YMMV
Now how would someone with a Dodge know better then Ford owners. Oil problems, not!
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