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Author Topic: Fc Wagon grey 132 motor with Fram F4 bypass filter  (Read 150 times)
fc25250
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« on: September 14, 2023, 08:52:28 AM »
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Might be a silly question but the Fram filter when changed does it need to be primed before the lid is tightened up ? Reason I ask is that after the last change not a lot of oil collects in the canister so does it need help to get a good head of oil flowing through this unit.
From what I see its all pretty pathetic and really hardly worth the exercise but looks period
What do you grey engine fellas reckon ?
Thanks FC25250
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Harv
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« Reply #1 on: September 14, 2023, 09:45:29 AM »
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The bypass filters only filter a very small amount of the oil pump flow (hence the name bypass), unlike the full-flow filters installed on the later red motors.

They do not need priming, but can benefit from venting to remove the air that will sit in the filter housing top. They can self-drain once shut down if the lid has any leaks.

Their benefit is marginal at best, and even then you would need to be daily driving it or using it very frequently in a stationary engine setup.

You probably remove move dirt particles via the oil leaking from the rear main, timing cover and rocker covers, along with the short oil change intervals.

Cheers,
Harv
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fc25250
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« Reply #2 on: September 14, 2023, 06:13:50 PM »
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Thanks Harv
Everything and all I expected
As previously stated they look period but their worth is about as good as a two Bob watch
Pretty sure I have never observed more than 2 of oil when I service the engine
Regards FC25250


The bypass filters only filter a very small amount of the oil pump flow (hence the name bypass), unlike the full-flow filters installed on the later red motors.

They do not need priming, but can benefit from venting to remove the air that will sit in the filter housing top. They can self-drain once shut down if the lid has any leaks.

Their benefit is marginal at best, and even then you would need to be daily driving it or using it very frequently in a stationary engine setup.

You probably remove move dirt particles via the oil leaking from the rear main, timing cover and rocker covers, along with the short oil change intervals.

Cheers,
Harv
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Fraze
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« Reply #3 on: September 15, 2023, 02:36:33 PM »
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When I change the oil and filter on my greys I always fill the canister with oil before refitting the lid. When I do the changes there is always a small amount of sludge in the bottom of the canister. This is dirt which would otherwise go thru the engine. The bypass filters only clean a small proportion of the oil but in my opinion every little bit helps.
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