BUBBA

Changing oil for the first time after short block install. Going to use Mobil 1 5W-30 and probably Delco oil filter.

Which Delco filter is the correct one?

Thanks much.

94GreenZ28

I use the 1218. Its the filter for 5.7L 2wd trucks.

JaysDropTopTA

PF-25 has changed to 454 I believe. That is the stock size. The PF-35 has changed to the 1218 which is a higher capacity one. I use the 1218 when I get an AC filter. I alternate between that one and the K&N .

SloMofo

Ditto

CDN WS6

I use the pf-25. They still have them here in canada.

lt1form

Delco PF1218, I believe is the same as a PF35 except it has a antidrain-back valve, replaces PF35.

BUBBA

What about PF44? I thought I saw where is used, but maybe it is for the Ls1. Does the Ls1 run with a different sized filter?

Thanks.

BUBBA

Ok. It looks like the PF 35 is the right one for Delco. I believe the HP 2002 is the correct one for K&N. What about the Mobil 1? Need to pick the oil and filter up today and want to put the best one in.

Thanks.

Patman

Bingo! This is what makes the PF1218 the better choice (if you're sticking with AC Delco that is). Even with a vertical mount filter, the antidrainback valve makes sure the oil above the filter stays put, otherwise it'll drain back to the pan and there will be a slight lag on oil flow on the first start.

As far as the Mobil 1 part number, the M1-202 is the stock one, the M1-302 is the big one. I prefer the K&N though, it flows much better. I use the larger HP3002 on mine. It has an antidrainback valve too (all K&N and M1 filters have this valve)

Injuneer

Can anyone confirm the demise of the UPF-1218 AC/Delco filter? This is the "synthetic filter media" version of the PF-1218. I've used these for several years, and only have one left. Heard they are discontinued. Anyone confirm?

I picked up a couple of the Moroso Racing Oil Filters to give them a try.... they make the equivalent of the PF-25, the longer PF-35 and an even larger 2-quart model. The 2-qt job looks like it might hang down just a bit too far.....

Patman

It is true. Champion Labs used to make that filter, but now all that they make is the UPF44. Corvette owners made their voices known, and that's why this is the only one left. For a while they made the UPF52 alongside it, but that's recently been discontinued I heard.

I wouldn't worry too much though, this filter was extremely restrictive to oil flow, so on a hard driven application it's not a good idea. That's why I like the K&N so much.

Injuneer

The sales "pitch" on the Moroso is that "27 microns" is the best balance of eliminating the particles that actually do damage, and avoiding excessive pressure drop in the filter media. Going to be interesting to see how the oil pressure responds.

Also glad you are posting "facts" regarding the Pennzoil products, rather than just letting the urban legend type remarks that get posted here regularly regarding Pennzoil to slip by.

Patman

It really bugs me when someone claims that one particular brand of oil causes sludge or other false rumors like that, since even if that oil did have higher instances of it 30 years ago, so what? That has nothing to do with the performance of the oil today.

Pennzoil is an excellent oil, I just saw an excellent oil analysis on it today, the guy ran it for 3400 miles in his 173,000 mile 1990 Cutlass, and got only 7ppm of iron and 1ppm of lead! (showing extremely low bearing wear) Viscosity was virtually unchanged from new, the level of insolubles was very low at 0.2% and it's flash point was still 435F! And this oil has a good dosage of both boron and moly in it, two excellent antiwear additives. If you're changing your oil every 3k, you can't go wrong using an oil like this at all. It looks like it can handle 4 to 5k in a lot of cases too.

I agree with that assessment Moroso has on the size of the wear particles. Everyone gets so worked up about finding a filter that stops particles down to 10 microns, but in our engines there is really no need for that. Anything in the 10-25 micron range is going to basically pass through your engine harmlessly, and not only that, if you're using a good oil and good air filter to begin with, you won't have all that much stuff floating around in there to begin with. So it's much more critical to have better oil flow, so that the engine doesn't starve itself for oil when you go full throttle. One thing to watch is your oil pressure gauge at redline. If you see it spike up, that's your oil filter restricting the flow. I used to see this spike when using an AC Delco filter, but with the K&N, the pressure stays rock steady and does not spike up higher when approaching the redline.

1fast95Z

I put a really strong magnet on the bottom of my oil filter. The reasoning is that it will catch and hold a lot of the shavings (what really causes engine wear) in the oil filter.

CamaroBoy96Z28

That is correct about the 454. I use the PF454. There is no longer a PF25.