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Oil in the toolbox #5107687 05/17/19 11:58 AM
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Floyd1 Offline OP
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Hello folks:

I now have a few trucks which have toolboxes on them. I usually keep a quart or two of oil in the toolbox just to have in case I ever need to add any or help someone out etc.

Where I live will begin to see temps in the 90’s everyday, so I’m sure the inside of the metal toolbox on the bed will easily reach over 100+F inside the toolbox while the truck is in the sun.

Will this lower the quality of the oil any? I know oils see temps much higher than this in the motor, but it would be flowing around, not sitting still in a plastic container.

Overall, I guess I’m asking if the constant fluctuation of temps, 50-60’s nights and 90+ days, will hurt the oil while it’s just sitting in the toolbox.

Am I overthinking? Is it really any different than a parked car with oil in the pan? The only difference being the oil is in a plastic bottle?

Thanks in advance

Re: Oil in the toolbox [Re: Floyd1] #5107689 05/17/19 12:05 PM
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AuthorEditor Offline
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I almost never have less than a couple of quarts of oil in the trunk of my car, and that gets pretty hot on a summer day. I'm pretty sure that oil will be just fine as long as you use it up once in awhile. Make sure it is tightly capped.

Re: Oil in the toolbox [Re: Floyd1] #5107706 05/17/19 12:21 PM
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Chris Meutsch Offline
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[quote=Floyd1]Hello folks:

Am I overthinking? YES Is it really any different than a parked car with oil in the pan? NO The only difference being the oil is in a plastic bottle? YES, PUT IT IN A ZIPLOC BAG.

[/quote


2005 Honda CR-V EX, 278k
Re: Oil in the toolbox [Re: Floyd1] #5107731 05/17/19 12:53 PM
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ecotourist Offline
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That range of temperatures over any reasonable period is no issue but I would suggest you always use that oil for your next change. It's an easy enough thing to do and that way it won't sit there "forever". If nothing else, the container will stay in better shape.


2000 BMW 528i 5MT M Sport
2007 Honda Accord EX-L 4Door V6 6MT
Re: Oil in the toolbox [Re: Floyd1] #5107732 05/17/19 12:55 PM
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FT92 Offline
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only problem I can see is the bottle leaking due to expansion in the heat , otherwise all should be good

Re: Oil in the toolbox [Re: Floyd1] #5107755 05/17/19 01:29 PM
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Linctex Offline
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I've got bottles of oil in an aluminum diamondplate TSC bed box that have been in there 20+ years. They have lasted just fine.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Oil in the toolbox [Re: Floyd1] #5107764 05/17/19 01:45 PM
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Bottom_Feeder Offline
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Originally Posted by Floyd1
Am I overthinking?

Yes. You're going to fit right in here.

Re: Oil in the toolbox [Re: Floyd1] #5107808 05/17/19 02:35 PM
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blupupher Offline
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As said, I would put them in plastic bags just in case (although the plastic bags would probably deteriorate before the bottles), and would rotate the oil in the box on the next oil changes if not used in a year or so.

That said, I carry a qt of oil under my hood by the firewall in my F150 for top off's (it uses 1 qt every 1500 miles or so). I have been refilling the same bottle for 3 years now and the bottle is still fine. It does feel a little softer than same bottles that are sitting on the shelf in my garage, but no leaking or cracking.


6mo:'18 Santa Fe:PP 10W-30/OEM, '18 Soul:Synpower 5W-30/PG, '10 Santa Fe:Synpower5w-30/D+, '04 F150/Magnatec 10w-30/ST
1yr: '12 xB:M1EP 0W-20/CQB, '02 F150:Magnatec 5W-20/D+, '94 VT1100:Peak 15W-40/D+
Re: Oil in the toolbox [Re: Floyd1] #5107818 05/17/19 02:45 PM
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DGXR Offline
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You're fine, just use up this oil at the next service and put some fresh bottles back in the tool box. If you do this rotation at every service it will never go bad.
I keep a jug of oil in my dirt bike gear bag and use that first when service is due. Replace the jug as needed. All good.


1995 Corvette coupe LT1 6-speed
2006 Tacoma 2.7 Base SR5 AC
1999 Yamaha YZ400FL
2003 Honda XR400R
Re: Oil in the toolbox [Re: Floyd1] #5107829 05/17/19 02:50 PM
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I once left a small metal can of touchup paint on top of the dash in the Florida sun. The lid blew of and made a big mess on the dash and carpet. Don't think oil is that volatile.

Re: Oil in the toolbox [Re: Floyd1] #5107837 05/17/19 02:55 PM
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Chris142 Online Content
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your worried about 140F or so vs 230F+ on a running engine?


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: Oil in the toolbox [Re: Bottom_Feeder] #5107854 05/17/19 03:29 PM
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Originally Posted by Bottom_Feeder
Originally Posted by Floyd1
Am I overthinking?

Yes. You're going to fit right in here.


thumbsup Just use the oil for your next change and rotate stock. . .


I use the overseas manual to choose my viscosity.


Hers: 2008 Jeep Liberty 154k, SS 5w30/Amsoil
Looking at options.

His: 2015 4Runner 60k, SS 5w20/Amsoil

Re: Oil in the toolbox [Re: atikovi] #5107943 05/17/19 06:01 PM
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Originally Posted by atikovi
I once left a small metal can of touchup paint on top of the dash in the Florida sun. The lid blew of and made a big mess on the dash and carpet. Don't think oil is that volatile.


Paint often contains thinners and solvents that will boil at relatively low temperatures.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Oil in the toolbox [Re: atikovi] #5107985 05/17/19 07:08 PM
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Originally Posted by atikovi
I once left a small metal can of touchup paint on top of the dash in the Florida sun. The lid blew of and made a big mess on the dash and carpet. Don't think oil is that volatile.

I used to carry gas line antifreeze (methyl hydrate) in a "single dose" plastic container in my glove compartment. I didn't think to take it out in the summer and later noticed that the originally flat bottom of the container was bulging. It didn't leak but there must have been some increased pressure.


2000 BMW 528i 5MT M Sport
2007 Honda Accord EX-L 4Door V6 6MT
Re: Oil in the toolbox [Re: Floyd1] #5108004 05/17/19 07:25 PM
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Floyd1 Offline OP
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Thanks folks. This site makes me second guess everything, but that’s what keeps me coming back, am I right?

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