Engine Oil In 1992 Ls

[TA in KC]

I am the new owner of a pearl white 1992 LS400. What type of oil did this car come with, and what should I be putting in it? I believe the previous owner just put regular Pennzoil in it, should I keep doing that or use synthetic/semi-synthetic? Thanks, Thomas

[91LS400vgb]

Use the search function and you will find lots of info on this as it has been discussed many times before. If you want your car to last as long as possible then use synthetic as it is clearly superior at resisting heat and deposits. I've used only Mobil 1 with no issues in my 91 LS400 with since I purchased it with 92k miles (previously it had been given conventional oil).