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Old 08-18-2016, 11:24 AM   #1
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is 6 mo. oil change necessary on gas motors?

The ford F53 manual says 7500 miles or 6 months. I've only got about 3500 miles since my last oil change 7 months ago. I have a trip I'm about to take that will put another 1500 miles on it more or less.

Wondering if it's necessary to change it now or just wait till I get back..

I use synthetic mobile 1 oil.
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Old 08-18-2016, 11:36 AM   #2
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Probably not, but the Ford engineers don't know how much or where the rig was driven, so they err on the side of caution. Temperature, humidity, condition of the engine internally, stop&go vs highway driving, fuel quality, etc. all make a difference.

If you are just talking about delaying the change for a few months or a few thousand miles, I wouldn't worry at all. The pistons aren't gonna blow out if you are a little late. Maybe your 250k mile engine will only go 249.8k, but how would you know just what made the difference? And would you care?
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Old 08-18-2016, 12:09 PM   #3
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Most of us classic car guys change our oil once a year. Don't know why yours can't go a year if you aren't putting much mileage on it.
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Old 08-18-2016, 12:18 PM   #4
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I change all my low annual miles vehicles at 1 year. Using mobile 1 synthetic in gas engines. Change than all in my birthday month to make it easy to remember when next to do.
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Old 08-18-2016, 12:23 PM   #5
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Mine is stored most of the winter. I heard it is better to change it before storage than after, even though I always feel inclined to make it a spring project when I'm in the mood
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Old 08-18-2016, 12:29 PM   #6
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If it was me.... If the vehicle is under warranty, yes, change the oil.

If the vehicle is out of warranty, I wouldn't waste my money.

I change oil in all my vehicles on a 5k mile basis, regardless of time. I use regular ole 5w20 or 5w30, depending on manufacture and outside air temperature.
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Old 08-18-2016, 12:30 PM   #7
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Quote:
Originally Posted by Brandonrv View Post
The ford F53 manual says 7500 miles or 6 months. I've only got about 3500 miles since my last oil change 7 months ago. I have a trip I'm about to take that will put another 1500 miles on it more or less.
Wondering if it's necessary to change it now or just wait till I get back..
I use synthetic mobile 1 oil.
Brandonrv
I use Shell Rotella 15w40 oil in my 250 hp 3126 Cat diesel engine and change it every 7k to 10k miles, (regardless of time).

Cat recommends every 15k miles or annually.

Mel
'96 Safari 148k miles
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Old 08-18-2016, 12:33 PM   #8
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If you don't use it daily/weekly it is important that the engine gets started up periodically. Has to be brought to temperature too. Starting up helps to lubricate everything and getting it to temp helps to eliminate moisture from everything.
At least that what they learned me when I went to school to be a wrench way back when
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Old 08-18-2016, 12:38 PM   #9
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I remember reading on another thread that the 6 month requirement was specifically instituted for the V10 engine......so it's not just a generalization for all ford engines. It should be understood why the requirement came about before ignoring it.
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Old 08-18-2016, 01:23 PM   #10
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Quote:
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Wondering if it's necessary to change it now or just wait till I get back..
Wait.
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Old 08-18-2016, 02:11 PM   #11
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I do one year or 5000 miles which ever happens first. Send a sample of the drained oil out. Normal wear indicators so far after 10 years and 56,000 miles.
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Old 08-19-2016, 08:03 AM   #12
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On both of my V10s, oil was very dirty at 3k miles, never getting to 6 mo or 1 yr. But I would go over a year if it wasn't dirty. The new diesel; oil is clean at 8K, I will go more than a year.
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Old 08-19-2016, 08:18 AM   #13
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The F53 chassis is also used in gas school buses. I suspect the 6 month interval comes from that application, a multitude of stop and go and idling waiting for kid to get on and off thus accumulating engine hours without higher mileage.
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Old 08-19-2016, 08:42 AM   #14
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90% of my customers changed annually or five thousand miles. I do also. No one ever had a problem.
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