Musthang

Has anyone ever run SAE 20W50 in their 90's 5.0? Pros & cons? I have a high mi. 5.0 and GTX 20W50 has leak stop conditioners.

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91 Ford Mustang GT 5.0 Conv., 5spd.

vfast

fix the leak..very heavy oil for the winter...alot of wear is happening in the morning start ups

hotrodman

i use it when ,motor gets old,, our gets low on oil pressure,,,thats when i go to 20x50 wt.

vfast

thought...never buy a car from ..hotrod

TheGmKiller331

First of all FIX THE LEAK!

And second i use 20/50 in the summer when its blazing hot out for just added protection.I only drive the car as a summer toy so thats ok.But if you drive it in the winter use 10w30 most of your engines wear occurs on start up.