Oil Consumption Problem

[rebelyell]

It’s shorter since the adapter is for a 2-wheel drive, not 4 - it lacks the right angle hence the need for clearance.

FWIW, have 2 RWD S10, 1 AWD Astro, all 3 have 4.3L V6, all 3 have OE EOC, All 3 have OE Vertical OFA, all 3 require a small diameter filter like PF52e.

 

[JDGMC]

Regarding the adapter, on which side was the bypass installed? The actual position of the bypass valve.

So at a junkyard I'd have to find an older 4 wheel drive without the oil cooler lines?? Is that correct? Do you by any chance have the OEM part number?

No - it doesn't have to be an older vehicle or 4WD. It can be 2WD - which is where you will most likely find the adapter you're looking for based on availability with newer cars and trucks (w/o tow package) . The PN you need is GM 3952301 which is discontinued from dealer. I believe ebay has a few NOS listed. GM PN 1929922 (supersedes 3952301 I believe) will also work. If you want to try another aftermarket give this place a call - they offer "with and without bypass valve" Oil Adapter. Below is a long list of vehicle that use the adaptor you're looking for.

Buick 1977-1981 Century

Buick 1977-1978 Electra

Buick 1991-1993 Estate Wagon

Buick 1982-1982 Estate Wagon

Buick 1977-1981 Estate Wagon

Buick 1991-1993 Hearse / Limousine

Buick 1982-1982 Lesabre

Buick 1977-1981 Lesabre

Buick 1982-1987 Regal

Buick 1977-1981 Regal

Buick 1977-1978 Riviera

Buick 1992-1993 Roadmaster Sedan

Buick 1977-1978 Skyhawk

Buick 1977-1979 Skylark

Cadillac 1991-1992 Brougham

Cadillac 1993-1993 Fleetwood Brougham

Chevrolet 1993-1997 Camaro

Chevrolet 1982-1992 Camaro

Chevrolet 1976-1981 Camaro

Chevrolet 1991-1993 Caprice

Chevrolet 1982-1990 Caprice

Chevrolet 1976-1981 Caprice

Chevrolet 1976-1981 Chevette

Chevrolet 1980-1981 Citation

Chevrolet 1984-1991 Corvette

Chevrolet 1968-1982 Corvette

Chevrolet 1982-1988 El Camino

Chevrolet 1976-1981 El Camino

Chevrolet 1991-1993 Hearse / Limousine

Chevrolet 1982-1985 Impala

Chevrolet 1976-1981 Impala

Chevrolet 1982-1983 Malibu

Chevrolet 1976-1981 Malibu

Chevrolet 1982-1988 Monte Carlo

Chevrolet 1976-1981 Monte Carlo

Chevrolet 1976-1980 Monza

Chevrolet 1976-1979 Nova

Chevrolet 1976-1977 Vega

Light Truck 2003-2006 Avalanche - 36 Bodystyle (2WD)

Light Truck 1985-1986 Blazer / Jimmy (2WD)

Light Truck 1979-1984 Blazer / Jimmy (2WD)

Light Truck 1973-1978 Blazer / Jimmy (2WD)

Light Truck 1979-1984 Blazer / Jimmy (4WD)

Light Truck 1973-1978 Blazer / Jimmy (4WD)

Light Truck 1987-1991 Blazer / Jimmy - 16 Bodystyle (2WD)

Light Truck 1987-1991 Blazer / Jimmy - 16 Bodystyle (4WD)

Light Truck 1985-1986 Blazer / Jimmy - 16 Bodystyle (4WD)

Light Truck 1996-2002 Express / Savana

Light Truck 1991-1995 Forward Control Chassis

Light Truck 1985-1990 Forward Control Chassis

Light Truck 1979-1984 Forward Control Chassis

Light Truck 1973-1978 Forward Control Chassis

Light Truck 1979-1984 Pickup (2WD)

Light Truck 1973-1978 Pickup (2WD)

Light Truck 1979-1984 Pickup (4WD)

Light Truck 1973-1978 Pickup (4WD)

Light Truck 1987-1989 Pickup - 03, 43 Bodystyle (2WD)

Light Truck 1985-1986 Pickup - 03, 43 Bodystyle (2WD)

Light Truck 1987-1989 Pickup - 03, 43 Bodystyle (4WD)

Light Truck 1985-1986 Pickup - 03, 43 Bodystyle (4WD)

Light Truck 1997-1998 Pickup - 03, 43, 53 Bodystyle (2WD)

Light Truck 1992-1996 Pickup - 03, 43, 53 Bodystyle (2WD)

Light Truck 1999-1999 Pickup - 03, 43, 53 Bodystyle (2WD)(Carryover Model)

Light Truck 1988-1991 Pickup - 03, 53 Bodystyle (2WD)

Light Truck 1990-1991 Pickup - 43 Bodystyle (2WD)

Light Truck 1990-1991 Pickup - 43 Bodystyle (4WD)

Light Truck 2003-2006 Silverado / Sierra - 03, 43, 53 Bodystyle (2WD)

Light Truck 2007-2007 Silverado / Sierra - 03, 43, 53 Bodystyle (2WD)(Carryover Model)

Light Truck 1979-1984 Suburban (2WD)

Light Truck 1973-1978 Suburban (2WD)

Light Truck 1979-1984 Suburban (4WD)

Light Truck 1973-1978 Suburban (4WD)

Light Truck 1997-1999 Suburban - 06 Bodystyle (2WD)

Light Truck 1992-1996 Suburban - 06 Bodystyle (2WD)

Light Truck 1987-1991 Suburban - 06 Bodystyle (2WD)

Light Truck 1985-1986 Suburban - 06 Bodystyle (2WD)

Light Truck 1987-1991 Suburban - 06 Bodystyle (4WD)

Light Truck 1985-1986 Suburban - 06 Bodystyle (4WD)

Light Truck 2003-2006 Suburban / Yukon XL - 06 Bodystyle (2WD)

Light Truck 1997-1999 Tahoe / Yukon - 06, 16 Bodystyle (2WD)

Light Truck 1995-1996 Tahoe / Yukon - 06, 16 Bodystyle (2WD)

Light Truck 2003-2006 Tahoe / Yukon / Escalade - 06 Bodystyle (2WD)

Light Truck 1992-1996 Van

Light Truck 1985-1991 Van

Light Truck 1979-1984 Van

Light Truck 1973-1978 Van

Medium Truck 1983-1990 Forward Control Truck Chassis - P6T042

Medium Truck 1988-1990 School Bus Chassis - B6P042

Medium Truck 1983-1987 School Bus Chassis - B6P042

Medium Truck 1988-1990 School Bus Chassis - S7T042

Medium Truck 1988-1990 Steel Conventional

Medium Truck 1983-1987 Steel Conventional

Medium Truck 1990-1990 Topkick / Kodiak

Oldsmobile 1991-1992 Custom Cruiser

Oldsmobile 1982-1982 Custom Cruiser

Oldsmobile 1977-1981 Cutlass

Oldsmobile 1982-1987 Cutlass (RWD)

Oldsmobile 1982-1982 Delta 88

Oldsmobile 1977-1981 Delta 88

Oldsmobile 1977-1981 Ninety-Eight

Oldsmobile 1977-1981 Omega

Oldsmobile 1977-1980 Starfire

Oldsmobile 1977-1981 Toronado

Pontiac 1977-1977 Astre

Pontiac 1982-1986 Bonneville

Pontiac 1977-1978 Bonneville

Pontiac 1977-1978 Catalina

Pontiac 1993-1997 Firebird

Pontiac 1982-1992 Firebird

Pontiac 1977-1981 Firebird

Pontiac 1978-1981 Grand Am

Pontiac 1982-1987 Grand Prix

Pontiac 1981-1981 Grand Prix

Pontiac 1977-1980 Grand Prix

Pontiac 1977-1981 Lemans

Pontiac 1983-1985 Parisienne

Pontiac 1977-1979 Sunbird

Pontiac 1977-1979 Ventura

 

[buckbros]

Thanks for all of the input on this. Now i have another question. Could I take the original adapter with the oil cooler holes and make a loop with piping and just run the piping from the one hole to the other? The oil would not be going to the radiator, just looping out & back into the adapter.

 

[JDGMC]

FWIW, have 2 RWD S10, 1 AWD Astro, all 3 have 4.3L V6, all 3 have OE EOC, All 3 have OE Vertical OFA, all 3 require a small diameter filter like PF52e.

I don't think you understand the difference between a K series OBS and the models you mentioned ^^^^. The oil filter adapter on a K series is angled - due to the front driveshaft (4WD). Remove the OEM adapter and install the aftermarket MFA350 - no angle/no clearance for the longer filter.

 

[buckbros]

I understand the reason for the MFA350 adapter which requires the shorter filter. Could I take my original angled adapter with the holes for the oil cooler and loop a piece of piping from one hole to the other. The oil would flow through the piping but would not go to the radiator. Is this possible to do without any issues?

 

[JDGMC]

I’’m sure you do. My reply was to rebelyell. As for your question - In theory yes, but I would not recommend it since it would be held in place by the plastic snap fittings assuming you are fabricating the line with the OEM ends. If you convert to AN hose it’s a different story. Why not just replace the lines?

 

[buckbros]

The reason I did not replace the lines were I ordered lines from Rock Auto a few years ago.The lines I received were incorrect. Sent them back and tried to find the right ones with no luck. Even took pictures of mine with measurements. Still no luck. That is when I decided to eliminate the lines. The snap fittings on the original setup was a piss poor design in my opinion. If I did use my old angled adapter & looped the lines I would use AN fittings. I was just wondering if anyone has done that and if it would work?

 

[JDGMC]

The reason I did not replace the lines were I ordered lines from Rock Auto a few years ago.The lines I received were incorrect. Sent them back and tried to find the right ones with no luck. Even took pictures of mine with measurements. Still no luck. That is when I decided to eliminate the lines. The snap fittings on the original setup was a piss poor design in my opinion. If I did use my old angled adapter & looped the lines I would use AN fittings. I was just wondering if anyone has done that and if it would work?

The reason for the incorrect parts may be related to the various coolers lines on these trucks. Take a pic of the sticker in your glove box that contains the RPO codes for your truck. Oil coolers are often listed by axle RPO’s like GT4, GU6 and KC4 (engine cooler). You could call the dealer parts dept and they can provide the exact pn. Don’t buy the lines until you speak or chat with a human and provide the information from your RPO sticker. Many sites have “chat” for communications and a phone number to order like Parts Geek. Unless your radiator is clogged I would stick with cooler lines. Not sure of your budget, but instead of making a AN line to loop (which would have a serious bend on it), you could fab AN lines to replace the hard lines. You will just need adapters for the rad side too.

 

[rebelyell]

I don't think you understand the difference between a K series OBS and the models you mentioned ^^^^. The oil filter adapter on a K series is angled - due to the front driveshaft (4WD). Remove the OEM adapter and install the aftermarket MFA350 - no angle/no clearance for the longer filter.

You're mistaken; I certainly do Know the difference between mine and a K-model. OP is trying to avoid Melling piece because some folk have given bad review regarding a suspect bypass. I've never used the Melling piece because when I need a conventional adapter, either I have one or get one from JY.
In my neck of the woods, some of the yards have core motors laying about on ground, and you can see exactly which adapters are on it (if they haven't already been robbed). FWIW, besides pickups SUV & vans, there's lotsa other vehicles & even heavier trucks that have OF adapters.

If it were mine, and if the OE lines were leaking, and if I could not source OE lines, I'd find some hose end fittings to fit rad EOC and existing OF adapter; then have local hydraulic hose shop make up a pair of lines to fit. Lotsa parts stores, heavy truck shops, farm supply/heavy equipment shops can-will do it.