Oil Filter

C

Cotterski

New member
How necessary is an oil filter for a stock Model A engine? Can they restrict the flow of oil to vital engine components?
 
Has anyone done oil sample comparisons between filtered oil and non-filtered oil?
I would guess there wouldn't be much difference. Any small amount of dust that may get past the rings or through the fill tube is likely to be too fine to be filtered out. Most filters are rated at 10 microns and the powdery dust stirred up on gravel roads is finer than that. If you're worried about filtering out metal debris, anything larger than 10 microns means you've got problems too big for a filter to fix!
I think most engine damage comes from chemical contamination: acid forming from crankcase condensation and dilution from unburned gasoline getting past the rings. No filter will take out this stuff, nor the resulting sludge.
Yes, all these contaminants will show up on an oil sample report but not in particles large enough for a filter to catch. Larger pieces of grit that get inhaled through the carb will have damaged the cylinder walls and rings long before the filter has a chance to catch them.
 
Speaking of and random trivia - who was the first manufacturer to have a factory installed oil filter and when?



(i honestly dont know but would like to)
 
I'm guessing most auto manufacturers from the 40's on up decided to redesign their engines in order to put an oil filter on it so they can charge the consumer more. Then charge them more to install a new one at every oil change. What a SCAM!!:eek::eek:

To think of all the money I could have saved if I never changed my oil filter since they don't filter any thing out, they will never get old. :rolleyes::rolleyes:
 
When I'm on a long tour (several thousand miles), I monitor the oil pressure and temp gauges and speedo. There is a relationship between the three. When I see the oil pressure dropping a pound or two (I run 25 psi to the middle main bearing) at the same speed and temp, I change the oil. I usually get about 3,000 miles between changes depending on the quality of the oil but I'd never dream of going that far without a filter. After my last 9,000 miles trip, I stripped the motor for inspection and just put it all back together again without changing or adjusting anything.
Before anyone says 3,000 miles is too far, sure it is if you are going short trips and have no filter. 3,000 miles between oil changes is normal for a modern car and after all, the main difference between a Model A and a modern in this regard is only an oil filter.
 
Cotterski said:
How necessary is an oil filter for a stock Model A engine? They are not very necessary. The key word here is "necessary" You just need to change the oil more often then if you had one.

Can they restrict the flow of oil to vital engine components? Not at all. on a stock engine it simply dumps the filtered oil back into the engine to splash and drip as normal.
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....
 
The general consensus seems to be that a filter is more important on an inserted engine.

Without a filter you live in hope that any chunks of metal (or broken timing gear) floating around in the oil only got there ... just before ... you pulled the plug.
 
updraught said:
The general consensus seems to be that a filter is more important on an inserted engine.

Without a filter you live in hope that any chunks of metal (or broken timing gear) floating around in the oil only got there ... just before ... you pulled the plug.
Click to expand...


the oil pump has a screen that wil keep chunks of metal out of the pump. If your engine is loosing chunks of metal, it needs more than an oil filter.
 
Is it true to the rumor, that even if you have a full flow filter, you should still change the oil after 1,500 miles?
 
Depends how long it takes to get to 1500 miles.

I've driven through the Bronx in peak hour and didn't get far.
 
from what some of you guys are saying, it seems that an air filter is more necessary than an oil filter.....
 
SeaSlugs said:
Speaking of and random trivia - who was the first manufacturer to have a factory installed oil filter and when?


I'm pretty sure Chevy had a factory installed oil filter on their 1928 model
and maybe even earlier. The 1929, 1930, etc. did not.:confused:

Bob-A:D
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FWIW,

A few years ago I did a service on a high mileage Nissan Pathfinder V6 that had 17,000 miles on it since it's last service. I cut the old oil filter open to see what it looked like inside and was quite surprised as how undirty it was. I expected it to be nearly full of crap but it wasn't.

On one of my own vehicles, a 1980 Ford 1/2 ton w/a 300 6 cylinder, at around 100,000 miles on it I replaced the oil pump w/a high volume pump. After that I noticed that the oil stayed cleaner a lot longer than it did w/the stock pump
 
Bob-A said:
SeaSlugs said:
Speaking of and random trivia - who was the first manufacturer to have a factory installed oil filter and when?


I'm pretty sure Chevy had a factory installed oil filter on their 1928 model
and maybe even earlier. The 1929, 1930, etc. did not.:confused:

Bob-A:D
Click to expand...

Among the American cars, I know Chrysler had oil filters before that.
I run an oil filter and put a button sized magnet in the drain plug.
Click to expand...
 
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