Prefill your Oil Filters

[Kiwi_Roy]

This guy did a test to see if it makes a difference to bearing wear
https://www.youtube.com/watch?v=AQ_Gt0yPlO0

[hardrockminer]

He must be putting that filter on a locomotive engine!  The one on my RV engine (Ford V10) is about the same size as my Z1 filter.

I once had an issue with oil moving to the cams, so I left the cover off and cranked the engine.  I had oil spurting everywhere before the engine even caught. 

[Galactica]

The oil filter in my truck is tiny, same one as in my Subaru, and is fitted horizontal.  If I pre fill it with the 100ml that it would hold, it would all spill out by the time the filter was sup on.  The oil filter in my  Subaru is vertical on top of the engine.  Again, all of the oil would spill out.  All 100ml of it.  An insignificant amount.  The filter on my Yamaha is also horizontal and smaller yet.  Probably the only way pre filling a filter would work is if it is fitted vertically and screwed on from the bottom.

Okay, full disclosure, I wrote the above before I actually watched the video.  I’ve never pre-filled oil filters.  Never even considered it.  Will probably never pre-fill an oil filter in future.  I’ve run engines for 100s of thousands of kilometres doing oil changes at manufacturers recommended intervals using (gasp!) Fram oil filters.  Never had oil related engine issues.  

The only time I had engine failure was on my first car.  A 1975 Honda Civic that I bought new.  Had piston ring failure at 100,000 miles.  Yes, miles, not kilometres.  I beat that car like a stolen mule right from the get go.  Not an oil related issue.

[Steve G.]

 The filter on my 4litre v6 Ranger the filter is upright, meaning if i choose i can fill it right to the top. And I do fill it 3/4 full or more.
   While i do not think main bearings would be damaged during initial startup, I have audible evidence that an unfilled or lightly filled filter does affect hydraulic chain tensioners tightening up quickly. On my Ranger there will be a 3/4 - 1 second loose chain sound as the filter gets filled up, which does not happen if the filter is filled up or when just starting the engine. Same for my R1200GS, just a millisecond of chatter before oil pressure pressurizes the hydraulic tensioners.

[Twisted_Twin]

You can't tell me what to do, you're not my real dad!

[Steve G.]

   I’d never tell
You what to do Shaun!

  And I’m definitely not your dad!!