Oil durability cost: shots before a fully oiled gun breaks

A gun loses 1 durability per shot with nothing applied, plus 1 for every oil without “Does not increase durability loss” and 1 for a scroll, capped at 6 per shot. So the fifth counting enchantment cuts the shots before repair from a fifth to a sixth of the stock number, while the first one halves it. Scrolls with a durability multiplier apply it after the cap: a +200% scroll with four counting oils costs (1 + 5) × 3 = 18 per shot.

Shots before repair

Columns are the number of counting enchantments (oils and scroll):

Gun	Durability	0	1	2	3	4	5	Scroll +200% with 4 oils
Klein Bauer	6,500	6,500	3,250	2,166	1,625	1,300	1,083	361
Ripox Mowlock	5,000	5,000	2,500	1,666	1,250	1,000	833	277
Socom ACR	4,700	4,700	2,350	1,566	1,175	940	783	261
Songbird	4,700	4,700	2,350	1,566	1,175	940	783	261
Neuraxis F22	4,200	4,200	2,100	1,400	1,050	840	700	233
CYB47	4,000	4,000	2,000	1,333	1,000	800	666	222
D4RT	4,000	4,000	2,000	1,333	1,000	800	666	222
Unknown	4,000	4,000	2,000	1,333	1,000	800	666	222
Ploika Compact	3,900	3,900	1,950	1,300	975	780	650	216
Vrede	3,900	3,900	1,950	1,300	975	780	650	216
Terrier URB.	3,700	3,700	1,850	1,233	925	740	616	205
Deathstar PG	3,600	3,600	1,800	1,200	900	720	600	200
Rokua .308	3,500	3,500	1,750	1,166	875	700	583	194
Rektor 100rd	3,400	3,400	1,700	1,133	850	680	566	188
Catacoil Rapid X	3,300	3,300	1,650	1,100	825	660	550	183
Drifter 9	3,300	3,300	1,650	1,100	825	660	550	183
Snut .38	3,300	3,300	1,650	1,100	825	660	550	183
Chat-Pardeur 98	3,200	3,200	1,600	1,066	800	640	533	177
Corpsemaker	3,200	3,200	1,600	1,066	800	640	533	177
Blackwater	3,000	3,000	1,500	1,000	750	600	500	166
Gravekeeper	3,000	3,000	1,500	1,000	750	600	500	166
Knop .22	3,000	3,000	1,500	1,000	750	600	500	166
M11A2 Fisk	3,000	3,000	1,500	1,000	750	600	500	166
M3 Termite	3,000	3,000	1,500	1,000	750	600	500	166
Valet	3,000	3,000	1,500	1,000	750	600	500	166
Chimera Rapid	2,800	2,800	1,400	933	700	560	466	155
Palehorse Topclipper	2,800	2,800	1,400	933	700	560	466	155
Tailor Marksman MKII	2,800	2,800	1,400	933	700	560	466	155
Cavalier	2,700	2,700	1,350	900	675	540	450	150
Type 80 Typhoon	2,700	2,700	1,350	900	675	540	450	150
.357 Balthazar	2,500	2,500	1,250	833	625	500	416	138
1889 Mario	2,500	2,500	1,250	833	625	500	416	138
Bronco 89	2,500	2,500	1,250	833	625	500	416	138
Duhar	2,500	2,500	1,250	833	625	500	416	138
Mossman	2,400	2,400	1,200	800	600	480	400	133
Beck 8	2,250	2,250	1,125	750	562	450	375	125
Impala Gravita	2,200	2,200	1,100	733	550	440	366	122
M182 Pierre-Fusil	2,200	2,200	1,100	733	550	440	366	122
Majordome	2,200	2,200	1,100	733	550	440	366	122
Socom 9	2,200	2,200	1,100	733	550	440	366	122
Flock 76	2,100	2,100	1,050	700	525	420	350	116
Star & Witness	2,100	2,100	1,050	700	525	420	350	116
Farsight	2,000	2,000	1,000	666	500	400	333	111
Ferryman	2,000	2,000	1,000	666	500	400	333	111
Hell ‘N’ Back	2,000	2,000	1,000	666	500	400	333	111
P38 Dirk	2,000	2,000	1,000	666	500	400	333	111
Salamander	2,000	2,000	1,000	666	500	400	333	111
Arbiter 2	1,800	1,800	900	600	450	360	300	100
Augusta	1,800	1,800	900	600	450	360	300	100
Nightlily 318	1,500	1,500	750	500	375	300	250	83
Breacher 8	1,200	1,200	600	400	300	240	200	66
Longboy	1,200	1,200	600	400	300	240	200	66
Death’s Toll	1,000	1,000	500	333	250	200	166	55
Dolphin 99	1,000	1,000	500	333	250	200	166	55
Flicker	800	800	400	266	200	160	133	44

Oils that pay for themselves

54 oils do not increase durability loss. The ones that also raise max durability give back shots instead of costing them:

Oil	Effects
Dense Oil	Max Durability +30%; Jump Power -20%
Detune Oil	Max Durability: +50%; Damage: -25%
Feature Gun Oil	Max Durability: +30%
Gentle Oil	Max Durability: +25%; Bullet size: -30%
Hefty Oil	Max Durability: +45%; Move speed: -20%
High Grade Oil	Max Durability: +20%
Inherited Oil	Max Durability: +50%; Loot Chance: -100%
Release Oil	Max Durability: +40%; Recoil: +150%
Rigid System Oil	Max Durability: +40%; Chance to consume extra ammo: +20%
Robust Mechanics Oil	Max Durability: +35%; RPM: -25%
Rubber Oil	Max Durability: +30%; Damage: -10
Seated Fit Oil	Max Durability: +70%; Bullet weight: ×10
Sensible Oil	Max Durability: +25%
Slippy Coating Oil	Max Durability: +30%; Spread: +1
Soft Bullet Oil	Max Durability: +30%; Bullet speed: -30%
Stiffy Fit Oil	Max Durability: +45%; Reload speed: -50%
Trusty Old Oil	Max Durability: +25%

High Grade Oil is the only one with no penalty. In the Socom 9 example in oils explained, adding it to two damage oils raises the shot count from 733 to 880 without changing damage.

Damage per durability bar

More oils cost shots but add damage per shot, so the right measure is total damage before the gun breaks. The most damage before repair record searches every five-oil set for that total; on every gun the winner contains Great Oil, Matrix Oil, Seated Fit Oil and Inherited Oil, and on 37 of 54 also Stiffy Fit Oil, so three of the five add no durability cost and raise max durability. Inherited Oil’s penalty is Loot Chance −100%; drop it for Hefty Oil (+45%, move speed −20%) if the gun is also your looting gun.

Planning a run

• Count only the oils that cost durability. A gun with three counting oils and two durability-free ones pays 4 per shot, not 6.
• A rank 5 gun with five counting oils fires a sixth of its stock shots. Bring repair kits or plan a stop at Ralphie before a long area.
• Avoid +200% and +350% durability scrolls (Least Resistance, Steam, Toxic Lobotomy) on a gun you need for a whole run unless you carry repairs: they triple or more the per-shot cost.

Check any loadout’s shots before repair in the build calculator.