Summary of BP Compatibility Test. Question: Is Militec-1 Compatible with BP's Energol Oil? A: Yes it is compatible and does not mix with or affect the primary lubricant [existing oil], even at a 50:50 concentration mixture/ratio to the primary lubricant such as done in the BP test. The recommended mixture rate for vehicles is 10% to 15% (1oz to 2oz per litre of oil). Question: Does Militec-1 leave "deposits"? A: No. In fact if you look at "Table 2", the results show Militec-1 does quite the opposite, deposits for the BP Energol & Militec-1 mixture are less than for BP Energol alone. Explanation: Militec-1 inhibits "deposits" by impregnating (not coating) metal surfaces, this makes it difficult for "deposits" of any kind to gain purchase on metal treated by Militec-1. Additionally this impregnating effect of Militec-1 provides additional metal stiffness, by occupying the spaces between metal particles on a molecular level. NB: It does not harden, nor change tolerances of engines or components, because Militec-1 it is a pure hydrocarbon oil molecule. An analogy/example: If you compress a dry sponge it requires relatively little effort. If you then saturated the sponge with water or oil, more effort is required for the same result. This is the Militec effect, where added stiffness occurs. To understand why Militec-1 does not coat nor harden metal, imagine instead you had added paint to the sponge. When the sponge dries out, a lot of effort is required to compress it because the paint has hardened. As Militec-1 is a pure hydrocarbon oil this does not occur. (Oil like water is inherently fluid in nature.) The ability of Militec-1 to reduce deposit build up (Carbon/Sludge/etc.) was first seen by racing teams and subsequently by the BP tests. The 16x increased added stiffness was determined by the University of Florida via Electron Microscopy.