First year for dual fuel tanks? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Drummerboy · 08-13-2018, 06:29 PM

What was the first year that Chevrolet offer dual tanks, either as a dealer installed option, and then as a factory installed option?

**jocko** · 08-13-2018, 08:49 PM

Dealer installed - no specific year. I THINK factory NL2 RPO first year was 69 - but I don't have documentation to back that up. May have been 70... Hopefully someone else can confirm.

**special-K** · 08-13-2018, 10:55 PM

'73 was the first year for dual tanks. To me, dual tanks means two matching tanks. The first auxiliary tank on GM pickups was offered in '69 and is rarely seen. That was a rear mount tank. None were offered after '69 until '72 when it was on the driver side in front of rear wheel. Aftermarket tanks it's hard to say, but it was long before these trucks came out

**jocko** · 08-13-2018, 10:57 PM

good point dual vs aux - I was assuming aux since posted in this era. Thanks for clarifying the special rear 69 tank, I forgot!

CRMW · 08-14-2018, 12:49 AM

I have a 72 with an Aux Tank on each side. Was that ever an option?

mike16 · 08-14-2018, 03:59 PM

dealers could have installed after market tanks

Coley · 08-14-2018, 04:02 PM

I have an auxiliary tank on my '72 that is mounted on the driver's side forward of the wheel.
I have never used this tank and don't know if it is empty or what...but what I like about it is that the fuel fill orifice is within the wheel well itself.
When the side of the box is cut (or both sides?) and a pipe/hose run up through the box floor with that cut stainless door on the box side...those are the ones I don't like.
I can live with them if I had to....but I don't like the look of it.

That said, I'm guessing the ones that fill from within the wheel well were more than likely dealer installed....thank goodness, lol.

My two bits.
Coley

**jocko** · 08-14-2018, 07:28 PM

Quote:

Originally Posted by Coley

I have an auxiliary tank on my '72 that is mounted on the driver's side forward of the wheel.
I have never used this tank and don't know if it is empty or what...but what I like about it is that the fuel fill orifice is within the wheel well itself.
When the side of the box is cut (or both sides?) and a pipe/hose run up through the box floor with that cut stainless door on the box side...those are the ones I don't like.
I can live with them if I had to....but I don't like the look of it.

That said, I'm guessing the ones that fill from within the wheel well were more than likely dealer installed....thank goodness, lol.

My two bits.
Coley

I couldn't agree with you more on the wheelwell fill saddle tanks. Best solution to everything. I even prefer them to an NL2 factory setup, more gas, more hidden. Have had two trucks with them - still have one of those truck (and hung onto the tanks from the one I sold)

72c20customcamper · 08-15-2018, 09:12 AM

My 72 has 2 tanks one on each side ,fill from inside the wheel with a cross over switch in the cab drivers side on the floor. Only problem they have locking gas caps, no keys. Going to pull them out someday. Assuming it was a dealer installed idem

08-13-2018, 06:29 PM	#1
Drummerboy Registered User Join Date: Dec 2010 Location: Sherwood, Arkansas Posts: 156	First year for dual fuel tanks? What was the first year that Chevrolet offer dual tanks, either as a dealer installed option, and then as a factory installed option?

08-13-2018, 08:49 PM	#2
jocko Senior Member Join Date: Oct 2009 Location: Godley, TX Posts: 17,996	Re: First year for dual fuel tanks? Dealer installed - no specific year. I THINK factory NL2 RPO first year was 69 - but I don't have documentation to back that up. May have been 70... Hopefully someone else can confirm.

08-13-2018, 10:55 PM	#3
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: First year for dual fuel tanks? '73 was the first year for dual tanks. To me, dual tanks means two matching tanks. The first auxiliary tank on GM pickups was offered in '69 and is rarely seen. That was a rear mount tank. None were offered after '69 until '72 when it was on the driver side in front of rear wheel. Aftermarket tanks it's hard to say, but it was long before these trucks came out __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

08-13-2018, 10:57 PM	#4
jocko Senior Member Join Date: Oct 2009 Location: Godley, TX Posts: 17,996	Re: First year for dual fuel tanks? good point dual vs aux - I was assuming aux since posted in this era. Thanks for clarifying the special rear 69 tank, I forgot!

08-14-2018, 12:49 AM	#5
CRMW Registered User Join Date: Jul 2014 Location: Calgary, Alberta Posts: 72	Re: First year for dual fuel tanks? I have a 72 with an Aux Tank on each side. Was that ever an option? __________________ 1969 Chev C/10 1972 GMC K2500 Custom

08-14-2018, 03:59 PM	#6
mike16 Registered User Join Date: Dec 2009 Location: bisbee, arizona Posts: 1,530	Re: First year for dual fuel tanks? dealers could have installed after market tanks

08-14-2018, 04:02 PM	#7
Coley Registered User Join Date: Oct 2011 Location: Victoria, B.C Posts: 3,794	Re: First year for dual fuel tanks? I have an auxiliary tank on my '72 that is mounted on the driver's side forward of the wheel. I have never used this tank and don't know if it is empty or what...but what I like about it is that the fuel fill orifice is within the wheel well itself. When the side of the box is cut (or both sides?) and a pipe/hose run up through the box floor with that cut stainless door on the box side...those are the ones I don't like. I can live with them if I had to....but I don't like the look of it. That said, I'm guessing the ones that fill from within the wheel well were more than likely dealer installed....thank goodness, lol. My two bits. Coley __________________ ....for some men, there is experience, skill and effort....for the others...there is visa and UPS LOL 1966 Chevy 1/2 ton (Florida- Red/white) 1972 Chevy 1/2 ton (California- Blue/white) 2005 Chevy Silverado HD2500/Duramax 2000 Dodge Ram 1500

08-15-2018, 09:12 AM	#9
72c20customcamper Registered User Join Date: Jul 2018 Location: Catskill Mountains,NY Posts: 8,927	Re: First year for dual fuel tanks? My 72 has 2 tanks one on each side ,fill from inside the wheel with a cross over switch in the cab drivers side on the floor. Only problem they have locking gas caps, no keys. Going to pull them out someday. Assuming it was a dealer installed idem __________________ Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary.



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