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Pro-Spec® IV XP Synthetic Blend

PRO-SPEC® IV XP SYNTHETIC BLEND provides you with one engine oil to protect on-highway low emission diesel engines with after treatment devices requiring a CJ-4 engine oil, on highway pre-2007 diesel engines, Tier 4 off-highway diesel engines and pre-Tier 4 off-highway diesel engines. Texas Refinery Corp went the extra mile to formulate an engine oil to meet the increasing demands from OEM’s. Provide your equipment with the extra protection found in PRO-SPEC® IV XP SYNTHETIC BLEND.

Full product specs:


Industry Leading BN

PRO-SPEC® IV XP SYNTHETIC BLEND is formulated with an industry leading Base Number (BN) of 15, roughly 43% higher than the leading competitor. TRC was able to build an engine oil with a high BN through a proprietary BN booster package. The boosted BN is vital to counteract the increased acidity found in engines using the EGR and SCR technology systems. To take your diesel engine the extra mile, PRO-SPEC® IV XP SYNTHETIC BLEND contains a BN retention package to extend engine oil drain intervals.

Protects Against Oxidation

Engine oil that oxidizes can contribute to shortened oil life and premature engine failure. Eliminating the acidification and thickening of engine oil in the presence of high temperatures is crucial in maintaining peak engine performance. PRO-SPEC® IV XP SYNTHETIC BLEND is fortified with antioxidants to neutralize acid formation, control soot formation and reduce oil consumption to help achieve extended drain intervals. PRO-SPEC® IV XP SYNTHETIC BLEND outlasts conventional and specialty oils by over 50%.

Maintains Engine Cleanliness

Keeping the ring belt and piston ring areas clean and free of deposits is critical for keeping equipment in the field and operational. Deposit build-ups can negatively impact the pumpability of the engine oil and reduce the operational power of the engine. PRO-SPEC® IV XP SYNTHETIC BLEND contains a powerful detergent chemistry that keeps engines clean. In fact, PRO-SPEC® IV XP SYNTHETIC BLEND reduces deposit build-up by 75% over conventional CJ-4 engine oils.

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