Filter change - every or every other oil change

Filter change - every or every other oil change

  • Every time

    Votes: 42 87.5%
  • Every other time

    Votes: 6 12.5%

  • Total voters
    48

MattR

Well-Known Member
Joined
Nov 16, 2019
Messages
1,175
Location
North Hampshire UK
Same here. Although I can’t understand why the Yamaha filter is £14 and the equivalent Kawasaki filter is £9?


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jeckyll

Well-Known Member
Joined
May 11, 2016
Messages
651
Location
Lotusland
Here's a story.

my brother is an engineer with Caterpillar. Caterpillar once made most of the HD on-road truck diesel engines on the planet. (They left the market when emissions regulations became too stringent - a decision my brother still sees as a huge mistake.)

Anyway, Caterpillar did a big study with oil and oil changes, and found that in most cases, changing the oil filter with every change introduced MORE dirt into the engine than changing every other time. The source of most of the additional dirt was due to a lazy mechanic/technician who failed to clean around the filter mount. When they went to slap the filter on, they'd knock dirt into the filter cavity, which found its way into the oil. To reduce wear/increase oil life, they recommended filters every other oil change.

He is a materials engineer, and did some of the analysis.

Personally, I swap them every time, but clean around the filter before removing it to minimize dirt finding its way to new oil.
Great to hear when people have real information to relay vs just 'well I do this because in my mind it's the best' :)

At the end of the day, most oil and oil filter threads can only properly be answered with used oil analysis. But oil threads are like politics and religion, people don't change their mind just because they're confronted with accurate information.

:D
 
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