K1600GT

Title and picture say it all.

erick_e

See attachment.

K1600GT

So I should continue to use the higher pressure rated PF64, correct?

jovette

Yes, use PF64

pkincy

Probably because the C6Zs use the 48 and they had them in stock.

AORoads

Or, like the bulletin said, it's easily-confused by someone reaching for a filter who is prone to being easily-confused.

Suggestion: bring the PDF fr. erick with you, and ask for a new filter to be put on, now.

JoesC5

Do your car a favor, and use the Mobil1 M1-113 or the K&N HP-1017 oil filter.

Neither the PF64 of PF48 are "higher pressure" filters. The Mobil1 and the K&N have both thicker end plates and shells, for a higher pressure rating.

ZZMike

This has nothing to do with the burst pressure rating of the filter canister, but rather the internal bypass valve spring pressure rating. A higher bypass valve spring pressure rating allows for a higher internal pressure within the oil filter before allowing unfiltered oil back into the engine. The recommendation by GM is a 22 psi bypass, neither the M1 nor the K&N filters you listed meet this bypass rating.

bringe

What about the 48r filters! that's all I use??? Over the mobile 1 113 filters.

vettetwo

The Service Bulletin warns that the filter must have an internal bypass valve opening pressure specification of at least 15 psi. The Mobil 1 filter has a specification of 17 psi and the PF64 a specification of 22 psi. Both the PF64 and Mobil 1 meet the minimum specification published by GM. The PF64 and Mobil 1 filters are both made by Champion Labs. I cannot comment on the K&N because I did not have a reason to investigate that specification.

JoesC5

Back to the PF48 vs PF64......

The PF48 has a 100kPa(14.5 psi) opening pressure where as the PF64 has a 150kPa(21.76psi) opening pressure.

I really doubt that .5 psi is going to make a difference, 14.5 psi vs 15 psi, in the real world.

But I'll stick with my Mobil1 M1-113 oil filter as it uses a synthetic filtering media vs a plain ole cellulose media that the ACDelco PF uses, and my Mobil1 has almost twice the canister burst strength.

vettetwo

I agree on the use of M1 with the better filter media. However, GM does recommend against use of the PF48 and state a filter with 15 psi (100 kPa) or less allows debris to circulate. in the engine.

At the end of the Bulletin they further state to look for an internal bypass valve opening specification or 150kPa equivalent to the PF64.

I think they focused on warning to look for a specification of more than 100kPa by using an ACDelco filter as an example which is a safe way to point at an unacceptable replacement part and overlooked the error found in the statement at the end of the Bulletin.

ZZMike

As the note states, and reason for the oil filter switch, is because of the new bypass specification. Use what you want, but the bulletin specifically states any aftermarket filter must meet the 1.5 BAR requirement of the PF64. It is not a typo, they are trying to keep trash out of the engine.

ZZMike

The can and filter media is better than the other 48s, but it uses the 1 BAR bypass.

JoesC5

Sounds as if GM is experiencing some really crappy manufacturing/machining now days.

There is no way a bunch of crap can get into the engine during it's normal service life using the factory air filter element, so it must be crap left in the engine from when GM built it.

The 100kPa oil filters worked fine for the whole range of LS series engines during the C5 and C6 days, and prior days with the old design cast iron engines.

My C6 Z06 came from the factory with the PF48 oil filter, as did tens of thousands of other C6 Z06's and hundreds of thousands of LS1's, LS2's, LS3's, and LS6's. Later Z06's along with the ZR1's LS9 had the UPF48R filter which also used the 100kPa bypass valve.

The early C6s' came with a magnetic oil plug(s) but GM found they were not needed and discontinued using them.

I never heard of any problems with crap getting around the oil filter media and into the engine, and hurting it, from 1997 to 2013. I never received a notification from GM in 2014 telling me to ONLY use the PF64 filter in order to save my LS7 engine from crap getting by the oil filter.

vettetwo

For clarity if the Service Bulletin was not read in its entirety, the latest generation of engines use two stage oil pumps with computer control of the main gallery volume/pressure instead of pump out pressure.

The Bulletin mentions reduction of the amount of time to provide oil to the engine bearings and lifters during cold start conditions. While not mentioned, the higher volume of oil flow is probably needed to protect the engines using start/stop technology where a load is placed on the engine a fraction of a second after restart.

Redc8z06

What it really comes down to is your warranty, do you want to take a chance and have Chevy deny a warranty claim for say a blown engine because they said you didn't use an oil filter that met their spec?

3 Z06ZR1

Use a Wixx oil filter the don't make cheap filter's same as NA
PA gold the fp48 is super cheap same Walmart supertech.