Pennzoil Supply Chain Issues

[zorki1c]

Back in the day a mechanic told me when he tore down an engine if it used Pennzoil there would be more sludge. Thats why I always used Valvoline

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[Meeka]

Back in the day a mechanic told me when he tore down an engine if it used Pennzoil there would be more sludge. Thats why I always used Valvoline

Back in the day (60’s, 70’s), I heard that about a lot of oils, mostly Castrol.

 

[Glen Baker LLC]

I truly believe motor oil formulation has changed since the 1900's

I wonder if the Amish talk about what brand of hay or oats, gets better performance from their horse? What's left after you lower your buggy? High performance horseshoes?

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