Isuzu recommends their IGMO or Isuzu Genuine Motor Oil for these 1988 circa engines (with turbo or not) so any brands with SAE 40 rating will do (Delo Gold, Silver, Petron HD Hauler, Shell and Castrol monogrades. etc) but because multigrade can give better protection esp during cold starts I would prefer this over the former mura lang naman difference![]()
btw even with gen 2 (4d56) and 2.5 (4m40) pajeros (with intercooler turbo pa nga) here in tsikot use these types of mineral based multigrades considering 4m40 engine is newer. also the patrol with turbocharged ZD30.
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