Lubricants

Read the label twice

Pick viscosity and chemistry from the engine or coolant maker chart, then pick the jug on this page that matches that chart.

DEF is not coolant and not fuel additive — keep dedicated jugs and funnels.

ELC coolant and conventional SCA programs do not share top-off jugs casually.

• Compare the jug label to the oil fill cap or coolant bottle sticker on the truck.
• Reject dented or swollen containers; store DEF out of extreme heat.
• Mark open dates on partial cartons and reseal caps tightly.
• Unsure which Rotella or Delvac jug matches your fleet sheet? Ask support@aonetruckauto.com with a photo of the cap stamp.

Storage and handling

Fluid quality stays invisible until analysis or teardown proves otherwise. Buy sealed jugs and store them clean.

Keep empty jugs until the first drain after a brand switch confirms no pressure or color surprises.

Fleet PM lanes

Shell Rotella, Mobil Delvac, Peak Fleet Charge SCA, and BlueDEF packages here support Class 8 PM lanes across mixed Cummins, Detroit, PACCAR, Volvo, and Mack fleets.

Jug SKUs link to product pages with any published equipment notes — not every fluid carries engine rows like a hard part.

Analysis and inhibitors

Oil analysis guides extended drains. Without analysis, stay on the published engine schedule.

Coolant test strips catch inhibitor drop before liner pitting shows on teardown.

Site guides summarize common fluid vocabulary; OEM bulletins govern approvals. Jug shipments follow shipping policy; sealed-fluid returns are described in returns and refunds.

Substituting brands

Viscosity grade and API CK category matter more than jug color. When substituting brands, match the specification sheet, not the shelf neighbor.

Fluid orders on A-One Truck Auto are fulfilled by HEAVY TRUCK PARTS, INC. under Florida sales law.

Lubricant SKU notes

Per-jug notes; card grid shows each price.

Shell 550045126 (Rotella T4 Triple Protection SAE 15W-40, 1 gallon) is the conventional heavy-duty diesel oil jug — details on Shell Rotella T4 Triple Protection 15W-40 1 Gal.

Mobil 112786 Delvac 1300 Super 15W-40 gallon serves Class 8 engines when Delvac is on the fleet sheet — order at Mobil Delvac 1300 Super 15W-40 1 Gal.

Shell 550045348 Rotella T5 synthetic blend 15W-40 gallon targets fleets stepping up from mineral oil — label data on Shell Rotella T5 Synthetic Blend 15W-40 1 Gal.

Peak FCA0B3 Fleet Charge SCA concentrate supports heavy-duty diesel cooling systems on SCA programs — jug specs on Peak Fleet Charge SCA Coolant Concentrate 1 Gal.

BlueDEF DEF002 is diesel exhaust fluid in a 2.5-gallon jug for SCR-equipped Class 8 engines — checkout on BlueDEF Diesel Exhaust Fluid 2.5 Gal.

These five jugs are the Lubricants department as published on this catalog.

DEF contamination from dirty funnels creates SCR faults that look like injector problems. Dedicated equipment pays for itself quickly.

Match oil viscosity to the engine chart for the coldest start you expect that season — not to whatever was on promotion last month.

Log coolant brand and oil brand on the work order whenever you top off or drain so the next technician inherits facts, not guesses.

Rotella versus Delvac choices

550045126 T4 and 550045348 T5 jugs share viscosity but not the same additive package — fleets stepping to T5 usually do so for extended drain programs backed by analysis, not because the cap color changed.

Mobil 112786 Delvac 1300 Super remains a fleet standard on mixed PACCAR and Detroit lanes where purchasing negotiated a single jug SKU for shop and over-the-road top-off.

Coolant and DEF discipline

FCA0B3 SCA concentrate must be mixed with deionized water per the label — hard tap water in the shop hose defeats the point of premium coolant.

DEF002 jugs belong in a cab or shop area away from diesel fuel nozzles. A few drops of fuel in the DEF tank triggers SCR derates that look like sensor failures.

Documentation for auditors

Keep jug labels or SDS sheets in the fleet file when you standardize on Shell or Mobil — auditors ask what oil was in the crankcase when a warranty claim arises.

Stock one DEF002 jug per tractor running SCR during winter when drivers top off at non-fleet pumps — contamination risk rises when only bulk DEF is available on the road.

Peak FCA0B3 and WF coolant filters in the Filters department must agree — never pour SCA from FCA0B3 into a system still running ELC coolants without a flush plan.

When switching between Shell T4 and T5 gallons on the same fleet, run one analysis cycle before extending drains — viscosity match alone does not prove additive compatibility with your DPF strategy.

Mobil Delvac 112786 and Shell 550045126 compete for the same 15W-40 PM slot — pick one brand per depot so bulk tanks and jug top-offs stay consistent.