Q&A: What is the effect of having your Oil Filter in “Bypass” for 4000 miles on Synthetic Oil?

Question by The Wise Cat Named Binky: What is the effect of having your Oil Filter in “Bypass” for 4000 miles on Synthetic Oil?
1991 Olds Calais 2.5L “Iron Duke” Tech4
180,000 miles
Valvoline MaxLife FUL LSYNTHETIC 5W-30 Motor Oil, looking for First Oil Change interval of 4000 Miles
Filter probably Sludged.. will it be Ok in Bypass?

ATF nad SeaFoam is out of engine, its all MaxLife FS in there now…

Then thinking of 6000 or 7000 mile oil Change Interval after this 1st 4000 mile Interval with possible “Bypassed” Filter? The oil and engine will be fine, yes or No?

Thanks
How Incredibly Important?
Michael: I heard there was a “Bypass Valve” that opens if the filter is “Clogged.” I think Mine got clogged from the Transmisison Fluid.

Best answer:

Answer by dukie
What do you mean “bypass”?

Bottom line….change the oil filter EVERY time you change your oil. It’s only $ 2-4 and is incredibly important for your engine.

What do you think? Answer below!

3 comments

  1. Filter Bypass means your Oil filter is NOT filtering contaminants, which is never a good thing. Think of it as not running an oil filter at all. This could be very damaging to your engine. Remember, if you could only change one or the other, changing the oil filter is more important.

  2. What’s with all the idiots that find it so hard to change their oil and filter every 3,000 miles? Oil filters only go 3,000 miles. The only bypass you will be seeing is the sidewalk that bypasses the x-way!

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