RE: {Chrysler 300} 300k question

Tom –

You’re not blending zinc in the gas. The zinc is blended in the oil.

Back when the car was new, lead was blended in the gas. Adding a magic bottle of lead to today’s gas doesn’t accomplish what you want it to. Again, the key is blending the lead into the gas.

Ron

From: Tom Wilburn
Sent: Friday, March 01, 2024 11:26 PM
To: Ron Waters <ronbo97@xxxxxxxxxxx>
Cc: chrysler-300-club-international@xxxxxxxxxxxxxxxx
Subject: Re: {Chrysler 300} 300k question

Ron

Thank you for this.

I thought the lead in gas prevented valve seat wear and recession by both cooling and lubricating the surfaces of the valve and seat.

I realize the valve guides must be lubricated by something, but will enough oil get to the valve and seat for zinc in the oil to protect them? It would seem a more difficult challenge than blending zinc in gas.

Tom

Sent from my iPhone

On Mar 1, 2024, at 11:00 PM, Ron Waters <ronbo97@xxxxxxxxxxx> wrote:

Lead additives are a waste of money. People that use them don’t understand that, for lead to be effective, it needs to be blended in with the gas. It *is* a good idea, however, to use a high zinc oil, like Valvoline VR-1. If your engine is rebuilt or low mileage, use 10W-30. If it has high mileage, you may want to consider 20W-50.

Ron

From: chrysler-300-club-international@xxxxxxxxxxxxxxxx On Behalf Of Michael Corrigan
Sent: Friday, March 01, 2024 8:35 PM
To: chrysler-300-club-international@xxxxxxxxxxxxxxxx
Subject: {Chrysler 300} 300k question

I finally picked up the very original K that I bought a few months ago. My question for the group is whether these cars of this vintage require lead additive? It seems to run OK on unleaded but I know that that can be deceptive thoughts?

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