Engine Oil - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Rusteeze64GB · 10-25-2010, 10:14 PM

What kind of engine oil are some of you guys using. Looking to see what you inline 6er's are using. About to do an oil change. Oil pressure is low, but have not changed the oil in a while. Just curious. Thanks in advance.

bubba327 · 10-25-2010, 11:20 PM

Temperature and use should determine the viscosity. I'm using 10-30 going into winter here in Idaho.
How low is your pressure?
Normal for my 230 I-6 is about 40-50 lbs.
I think I checked the manual awhile back and that was accepted range.
Any body have a service manual handy??

daverod · 10-25-2010, 11:33 PM

10w30 syntec

irish1966 · 10-26-2010, 12:02 AM

Quote:

Originally Posted by daverod

10w30 syntec

X2 with Daverod

(no Champion plugs, and always a K&N filter)

Shaky · 10-26-2010, 10:52 AM

A lot of motor oils don't have the wear additives for a flat tappet cam anymore.

http://www.hotrod.com/techarticles/e...ech/index.html

Mobil 1 says their 15w-50 has enough for older motors. After a good break-in period with dinosaur oil and ZDDP additive I run the Mobil 1.

http://www.mobiloil.com/USA-English/..._1_15W-50.aspx

61_FL_Apache · 10-26-2010, 11:19 AM

I ran straight 40 in my 65 with an I6. My engine had real low pressure and low compression. Im sure it was just wore out.

Texasdeere · 10-26-2010, 11:19 AM

I live down south and use 30w or 15w40 diesel oil in my old truck and tractor engines.

bama63 · 10-26-2010, 11:32 AM

15w40 delo 400 diesel oil has all the wear additives needed for our older engines

**62 Longbed** · 10-26-2010, 04:57 PM

15w40 Rotella or Delo 400 diesel , like bama63 .. this oil has all the wear additives needed for our older engines .

andyh1956 · 10-26-2010, 07:01 PM

i use 15 w 40 rotella in every engine i own, have for years.
andy

C-10cutty · 10-27-2010, 07:04 AM

15w40 diesel oil in my 235 and Dart 273, good for old motors.

bubba327 · 10-28-2010, 11:20 PM

Good info here guys , I never thought about using diesel oil.
Anybody using Marvel Mystery oil ? Or other additives??

*jake wells* · 10-28-2010, 11:50 PM

I just use Pennzoil 10W30 in everything i own except my mowers i use HD30 in them.
I add a little about 8oz per oil change of STP oil treatment with everything and use good quality WIX filters.

Every month a add a bottle of fuel injector/carb cleaner to my gas tank and then every 12 months i use seafoam.

10-25-2010, 10:14 PM	#1
Rusteeze64GB Registered User Join Date: Jul 2009 Location: Mesa, AZ. Posts: 67	Engine Oil What kind of engine oil are some of you guys using. Looking to see what you inline 6er's are using. About to do an oil change. Oil pressure is low, but have not changed the oil in a while. Just curious. Thanks in advance.

10-25-2010, 11:20 PM	#2
bubba327 HOW long until spring?? Join Date: Mar 2009 Location: Star Idaho Posts: 1,413	Re: Engine Oil Temperature and use should determine the viscosity. I'm using 10-30 going into winter here in Idaho. How low is your pressure? Normal for my 230 I-6 is about 40-50 lbs. I think I checked the manual awhile back and that was accepted range. Any body have a service manual handy?? __________________ 69 chevelle convertible 71-C-10 short-wide and low 64 C-10 custom shortbox "Bubba"s Recycling project"

10-25-2010, 11:33 PM	#3
daverod SSN 706 Join Date: Mar 2009 Location: Pocatello Idaho Posts: 3,821	Re: Engine Oil 10w30 syntec __________________ Daverods 64 C10 Daily driver 292 3 speed "Driver" Daverods 66 Build C10 Bags 350/350(On Hold) Daverods 52 Build 3100 S10 chassis,Bags, 350/700r4 "Click it"

10-26-2010, 10:52 AM	#5
Shaky Six in a row makes it go... Join Date: Mar 2009 Location: Vacationland: Maine Posts: 1,346	Re: Engine Oil A lot of motor oils don't have the wear additives for a flat tappet cam anymore. http://www.hotrod.com/techarticles/e...ech/index.html Mobil 1 says their 15w-50 has enough for older motors. After a good break-in period with dinosaur oil and ZDDP additive I run the Mobil 1. http://www.mobiloil.com/USA-English/..._1_15W-50.aspx __________________ 67 C20 long step resto: http://67-72chevytrucks.com/vboard/s...d.php?t=342086 66 C10 long step build: http://67-72chevytrucks.com/vboard/s...=1#post3814790 CT to Alaska in a 67 C10: http://67-72chevytrucks.com/vboard/s...d.php?t=399224 “The height of sophistication is simplicity." - Clare Boothe Luce

10-26-2010, 11:19 AM	#6
61_FL_Apache Who Me? Join Date: Sep 2010 Location: Royal Palm Beach, FL Posts: 4,067	Re: Engine Oil I ran straight 40 in my 65 with an I6. My engine had real low pressure and low compression. Im sure it was just wore out. __________________ Steve 1997 Tahoe LT 4D 2WD (DD) 2001 Blazer 4D 2WD 1961 Apache 10 (sold) 1965 C10 Stepper (sold)

10-26-2010, 11:19 AM	#7
Texasdeere Registered User Join Date: Sep 2006 Location: League City, Texas Posts: 732	Re: Engine Oil I live down south and use 30w or 15w40 diesel oil in my old truck and tractor engines.

10-26-2010, 11:32 AM	#8
bama63 Registered User Join Date: Jun 2010 Location: gadsden, alabama Posts: 468	Re: Engine Oil 15w40 delo 400 diesel oil has all the wear additives needed for our older engines __________________ Due to financial constraints, the light at the end of the tunnel will be shut off until further notice

10-26-2010, 04:57 PM	#9
62 Longbed Senior Member Join Date: Nov 2008 Location: Gresham , Oregon Posts: 588	Re: Engine Oil 15w40 Rotella or Delo 400 diesel , like bama63 .. this oil has all the wear additives needed for our older engines . Last edited by 62 Longbed; 10-26-2010 at 05:01 PM.

10-26-2010, 07:01 PM	#10
andyh1956 Registered User Join Date: Mar 2010 Location: thomastown mississippi Posts: 1,261	Re: Engine Oil i use 15 w 40 rotella in every engine i own, have for years. andy

10-27-2010, 07:04 AM	#11
C-10cutty Registered User Join Date: May 2010 Location: Galesburg, Kansas Posts: 174	Re: Engine Oil 15w40 diesel oil in my 235 and Dart 273, good for old motors.

10-28-2010, 11:20 PM	#12
bubba327 HOW long until spring?? Join Date: Mar 2009 Location: Star Idaho Posts: 1,413	Re: Engine Oil Good info here guys , I never thought about using diesel oil. Anybody using Marvel Mystery oil ? Or other additives?? __________________ 69 chevelle convertible 71-C-10 short-wide and low 64 C-10 custom shortbox "Bubba"s Recycling project"

10-28-2010, 11:50 PM	#13
jake wells Account Suspended Join Date: Sep 2009 Location: No Longer Here Posts: 352	Re: Engine Oil I just use Pennzoil 10W30 in everything i own except my mowers i use HD30 in them. I add a little about 8oz per oil change of STP oil treatment with everything and use good quality WIX filters. Every month a add a bottle of fuel injector/carb cleaner to my gas tank and then every 12 months i use seafoam. Last edited by jake wells; 10-28-2010 at 11:52 PM.



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