Yes, a large cache does make sense as it's being stocked, even if it starts to seem funny later.
Walmarts near me are so poorly restocked that they never have 5w30 Chevron Supreme in the winter; rarely in summer. Found 17 quarts in New Hampshire, and saved on sales tax too. Yoink!
Have 12 quarts of Chevron 10-30 for the saturn in summer which I bought because Walmart still had some but it looked like they were discontinuing everything.
Rite Aid does a "Single check rebate" where I go for free toothpaste, etc., and sometimes has Superflo or Havoline for 69 cents (limit 12). Show up on Sunday by 10am before stock runs out. Still have mostly found 10w30 which will now have to wait for April/May.
Assumed when Mobil 1 went up in price supertech synthetic 5w30 might too. Bought 6 quarts for wife's saturn for Jan-Feb (and a little top-off). Stored for now.
Found Mobil 1 0w30 on clearance at wally's. Would be good in the olds during the deep freeze.
Did the pep boys citgo case deal thing. When I get to pick a weight I get 5w30 since I seem to "come in to" 10-30 a little more easily. Any rebate/sale that gets it under 79 cents/qt I'll try for.
Have some havoline 5w30 from "family dollar". Got it to top off the Chevron 5w30 presently in the saturn during the now-over shortage. Now that I have "real" chevron supreme these will kick around until I feel like doing a "mongrel" oil change with all the leftovers (both equilon and c.t.)
I feel it's wasteful to drive to the auto parts store just to get parts for a change. I combine by oil shopping with other errands in the same vicinity.
Filters: Keep several supertech 3614's for wifes' and sisters' identical saturns. Figure if one goes away I won't have unuseable stock.
I don't keep any filters for my dodge truck which is one foot in the grave. Something might happen to it by next change.
I'm glad I didn't stock up on supertech's pf47 equivalent b/c I'm switching to PF52 length for the olds. But I'll only buy one of those to see how it goes.
Also have a stash of bar/chain lube, 2cycle oil, gasoline, 30 weight for survivalist gear. This stuff, rarer, completely sells out when needed.
91 Dakota 2.5, 96 saturn SLs (two), 92 olds ciera 3.3.
Wife's saturn gets chevron supreme or better, everything else (including sister's saturn) cheap stuff of appropriate weight except the dead of winter when they get thin synthetic.