I looked at doing idparts, and they are fairly competitive on pricing. Looked at getting the Liqui Moly Top Tec 4605 5w30 just now actually. You can't just buy 6 quarts (they come in liters though) on Amazon, you either have to spend $100+ for (2) 5 liter jugs, or do (1) 5 liter jug for $50 and then get.....screwed.....and buy (1) 1 liter jug for $17.........makes me think I might just stick with the Pennzoil Platinum Euro L for a while.
Anyways, back to my point about Idparts. They are competitive on oil pricing, plus you get a new filter. $66 for a filter and 6 quarts (or liters) of Liqui Moly is really good. Filter is pry $10, so that makes it $56 for 6 quarts or $9.33 a quart. You can get Pennzoil Platinum Euro L from them, but I think it adds $10 or $15 to the original price of $62. BUT.....click through like you were going to check out, and then enter your zip code for shipping estimate. I did, and it was going to cost $41 for shipping. I will pass.
I also got my oil filter from Rock Auto. I checked my local NAPA and O'Reily's and neither of them can get the filter for our trucks. NAPA couldn't even get me the right oil, while I think O'Reily's could. If O'Reily's has the right oil along with the filter next time I need to change (at the rate the wife drives the truck, I figure that will be 1-2 months


), pry go there. Otherwise it will be Wally-World and Rock Auto