Hard Knocks after Oil Change
Fleet Mechanic
Joined: Jan 2007
Posts: 1,293
Likes: 18
So, it's still getting the wear from operating without oil as the bearing surfaces grind over each other waiting on oil, it just doesn't sound as bad, right? Wonder how much life that sucks out of an engine?
Isn't the point of the anti flow back valve in the Motocraft filter designed to keep lube in the engine? I think it would make perfect sense to at least partially fill the filter with oil to at least saturate the media. This "holding the accelerator while cranking" is at best a "feel good" measure. Just because you cannot hear it doesn't mean you aren't doing damage.
Isn't the point of the anti flow back valve in the Motocraft filter designed to keep lube in the engine? I think it would make perfect sense to at least partially fill the filter with oil to at least saturate the media. This "holding the accelerator while cranking" is at best a "feel good" measure. Just because you cannot hear it doesn't mean you aren't doing damage.
Oil filters with anti-drainback valves are designed to keep the oil in the filter on engines with the filter located so it could drain back rather than the engine where the filter is mounted vertically so the oil stays in. This helps get the oil pressure up quicker.
On the oil viscosity, it's okay to move up on a well-used engine that is obviously clearanced. It may not help the dry-start knock, but it will hold more oil pressure to help protect from adding to the damage. I don't think anyone would consider 10W30 excessive in an engine with 100K and obvious problems. If it were mine I'd probably go to 15W40 plus an anti-dry start additive like MT-10.
Elder User
Joined: Jul 2006
Posts: 958
Likes: 0
From: Las Vegas, NV
Definitely put some oil in the oil filter and slosh it about for the filter material to absorb it.
For horizontal oil filters, fill it about half full and tilt the filter in a circular motion.
The ticking isn't that big of a deal, but it is best to pre-prime the filter. The engine has hydraulic lifters that need some amount of oil to operate to their full capacity. Air will do in a pinch, because air is technically a fluid, from a mathematical standpoint, but it has a significantly lower density. But, don't gun the engine thinking it will help fill up the lifters faster. It wont. Only slow and steady pressure will do it, and if you gun the engine, it may put extra wear and tear on the lifters/cam, since not enough oil is reaching it quickly enough for the higher revs.
Just let it idle 10 minutes and the noise will go away as the lifters are filled.
For horizontal oil filters, fill it about half full and tilt the filter in a circular motion.
The ticking isn't that big of a deal, but it is best to pre-prime the filter. The engine has hydraulic lifters that need some amount of oil to operate to their full capacity. Air will do in a pinch, because air is technically a fluid, from a mathematical standpoint, but it has a significantly lower density. But, don't gun the engine thinking it will help fill up the lifters faster. It wont. Only slow and steady pressure will do it, and if you gun the engine, it may put extra wear and tear on the lifters/cam, since not enough oil is reaching it quickly enough for the higher revs.
Just let it idle 10 minutes and the noise will go away as the lifters are filled.
Junior User
Joined: Jan 2008
Posts: 70
Likes: 0
Now, you may take that as belligerent, and if you do, blow it out of your horn, but it is still fact. I do mean that in the nicest possible way though.
New User
Joined: Mar 2008
Posts: 14
Likes: 0
If my truck does the loud knocking next time I change the oil after pre-filling the filter, I may take it to the dealership the next time since I have enough "Owners Advantage" points to get a free one. I will see if they think something is abnormal. They always want our money anyway.
I would suggest you ask for a "senior" technician and or a shop foreman to be there at start up after the oil change. If the dealership you use is anything like to dealership I worked at, the guys who USUALLY changed oil (newbies) were not the guys you want diagnosing you you engine noises.
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mars2
1987 - 1996 F150 & Larger F-Series Trucks
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Apr 6, 2017 06:04 PM
