Has anyone used Seafoam

[maxrider]

Okay, I add to the mix, I have been using this, works on my Ironbutt rides has no issues, is delivered to my door, and at a good price.

Change oil every 5K miles on principal, regardless of brands I have used prior.

5K is just cheap insurance.

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Kirkland Signature Heavy Duty Diesel 15W-40 Motor Oil 1-Gallon, 3-pack
Item 1448220
Your Price39.99$
Price Per GALLON: $13.33
Shipping & Handling Included*
Limit 6 Cases Per Member

Features:
3-1 Gallon (3.78L) Bottles
SAE 15W-40 CK-4 Diesel Engine Oil
Increased Wear Protection
Better Oxidation Control
Highly Shear Stable Formulation

I used Rotella T-6 15-40 prior to the last few changes, do not detect any difference between them, no shifting issues, or noise, etc.