Quote:
Originally Posted by John62
So if you have not changed your oil in 25,000 miles because it is still clean, ok but not changing the filter in that time, don't you think even if it does not do a good job on small parts it will clog up with big parts and then you have no flow except your little 1/8" bypass.
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The bypass filter has been changed 4 times in the duration of the 25,000 miles 4 + years, along with 1 quart of makeup oil each time. 4 quarts of makeup oil and 4 by pass elements. I just had to replace the injection pump and that entails removing 3 bolts from the timing gear. The inside of the engine is clean from that observation.
If the oil is clean there is no buildup in the engine, no acid no sludge buildup.
You have to get over what happens to an engine using a full flow filter when you don't change oil religiously. The by pass filter is doing 30 times better job of cleaning your oil and you can leave it in because the filter is removing all the dirt, not just some of it as a full flow filter does.
Think of chicken wire over your windows in your house instead of screens, keeps birds out but all the smaller insects pass right through. Replace the chicken wire with window screen and all the insects are caught outside. Full flow is chicken wire, by pass filter is fine screen. If you want to leave some of the dirt in the oil a full flow filter is for you. If you want to catch all of the dirt the first pass through, by pass filtration.
The Frantz slogan is "change the filter, not your oil", keeping oil as clean as when it is put in the engine does a bunch of good things. No factory designed full flow filter system is capable of doing this because the filter would be so restrictive it would starve the internal engine parts. The full flow system has a lot of drawbacks. The by pass system circumvents all of the full flow designs shortcomings.
I did a lot of investigating before I invested my own money in a Frantz franchise. I could find no downside to using a much more efficient oil filter system. Since I started using the system on my own vehicles I know it does exactly what it is billed as doing.
From the posts on here anyone can see most people are trained to do car maintenance the way it's been done for years. Highly resistant to changing filters and leaving oil in the engine, but if the oil is clean there is no longer a reason to drain it out. Oil still lubricates as long as it isn't contaminated with fine dirt. No reason to throw out clean oil. Send it to an oil analysis lab and have it checked if you don't trust it, I already know you'll find it's fine to run it many more miles.
Yep, it goes against every thing you've learned about car maintenance, but no one of the people that said you have to change oil and filter at XXXX miles, never used a by pass filter system, it's a game changer.