What’s Floating in Your Coolant?

Preview text: Stop rust & debris before they clog your oil cooler and cause failures

Thursday, Mar 26, 2026 at 1:45 AM EasternKlaviyo

Sinister DieselWhat’s Floating in Your Coolant?

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Subject: What’s Floating in Your Coolant?
Preview text: Stop rust & debris before they clog your oil cooler and cause failures
From: do-not-reply@sinisterdiesel.com
Brand: Sinister Diesel
ESP: Klaviyo
Sent: Thu Mar 26, 2026, 1:45 AM ET
Size: 39 KB
Images: 10
Links: 11, 3 of them buttons
Subject length: 33 characters

Against Sinister Diesel's usual

Sent in the 1 AM hour, which holds 13% of its emails; 16% arrive in the 10 AM hour. The subject is 33 characters; its average is 34.

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