Thread: AC Delco oil filters

Thats real good value providing the filters are good quality. I wonder if the other filter is available on ebay as well.Thanks Murray

Originally Posted by Bearman

Thats real good value providing the filters are good quality. I wonder if the other filter is available on ebay as well.Thanks Murray

I couldn't find any Z333's on ebay, but the saving on the Z155's would at least off set the cost of the second filter.

With the $15 postage, it still only works out to $3.25ea.

Murray

AD-delco are a GM approved alternative service part supplier, running an AC01 oil filter on my falcon atm, no dramas so far

Delco are good, I use them

I worked for a Vauxhall, (Holden), dealership in England for several years. AC Delco where the standard oil, air and fuel filters used on all services. Never known a problem.
Pretty standard use in the England.

Just need to make sure they are genuine AC Delco and they have not been sitting for years.

AC Delco aren't too bad.

These are the bypass filter, so need changing more frequently than the Z333 (which is only there to catch the rocks anyway).

Thanks for the find!

Originally Posted by isuzurover

AC Delco aren't too bad.

These are the bypass filter, so need changing more frequently than the Z333 (which is only there to catch the rocks anyway).

Thanks for the find!

What's your recommendation for oil filter changes Ben?

Originally Posted by Dougal

What's your recommendation for oil filter changes Ben?

I don't know if I am able to recommend an interval. It depends on a number of factors - e.g. I have found huge differences in soot generation across the same engine type. (So the bottom line is I wouldn't want to state a number).

In general, oil filters are just like air filters, the longer you leave them in the more efficient they will become. However, Full Flow filters (e.g. Z333 on a 4BD1/T) will bypass if the pressure drop gets to high. It is of course not good to have a filter that is bypassing, especially if that is your only filter!!! Bypass filters will just filter a smaller portion of the oil as they load with crud.

There is a splitting of the flow between the full flow and bypass filters based on the pressure drop across the full flow filter and the size of the orifice (inlet) to the bypass filter. So the proportion of flow each one sees will change as the filters load up.

Since the FF filter is just to catch the rocks, I would prefer to leave it a bit longer and change the bypass filter more frequently, so a larger portion of the oil goes through the bypass - even if it is not at quite as high an efficiency.

(Edit - I am sure you knew most/all of the above Dougal, I just added the explanation for anyone else who might read this).