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Rick Gibbs · 08-10-2020, 09:34 AM

So this is a follow up post and new question. Adjusted all the linkage on the clutch and checked out all the mounts related to the chatter question. Truck much much better. Thanks to all that helped. New question is about the oil. So I got lucus old motor oil with zinc 10w40. Oil pressure 40 psi when engine is cold. When it warms up to 180 temp. My oil pressure goes to 10 psi to 20 psi. The psi will increase when warm with higher RPMs but just sitting still will go back down to 10 psi. Do I need to run a heavier oil weight like a 20w50 during hotter days. Temp running well over 90 degrees on a daily basis in Alabama. Thanks for the help in advice.

08-10-2020, 09:34 AM	#35
Rick Gibbs Junior Member Join Date: Jul 2020 Location: Alabama Posts: 15	Re: New to the Flathead game and need advice So this is a follow up post and new question. Adjusted all the linkage on the clutch and checked out all the mounts related to the chatter question. Truck much much better. Thanks to all that helped. New question is about the oil. So I got lucus old motor oil with zinc 10w40. Oil pressure 40 psi when engine is cold. When it warms up to 180 temp. My oil pressure goes to 10 psi to 20 psi. The psi will increase when warm with higher RPMs but just sitting still will go back down to 10 psi. Do I need to run a heavier oil weight like a 20w50 during hotter days. Temp running well over 90 degrees on a daily basis in Alabama. Thanks for the help in advice.