A two-line fill note
Give each product its own line with name, quantity and units. Mark each line when completed. This is clearer than a single total additive quantity and helps another driver understand exactly what was added.
Do not share dosing shortcuts
The products use different charts. Complete each calculation independently and compare it with that bottle's instructions. Keep earlier notes only as history when the selected products or treatment plan change.
Compare simplicity before purchasing
If separate instructions are difficult to manage, compare the combined winter option against your needs. Decide before buying supplies, and put the chosen plan with the truck. Flexibility is only useful when the routine remains understandable.
Check the official directions
Use the current package label and manufacturer documents for treatment rates, handling and application details.
Independent dealer link. Current price and availability are shown by AMSOIL.
Practical checklist
- Read both current product instructions.
- Write a separate measured amount for each.
- Record both additions at the fill.
Questions before you buy
Can I use one product's ratio for both bottles?
No. Use their separate current instructions.
What is the alternative to managing two bottles?
Compare an appropriate combined product such as 4-IN-1 by functions and directions.
Related questions and products
- Cetane Boost dosing
- Cold Flow dosing guide
- 4-IN-1 versus Cold Flow
- AMSOIL Diesel Cold Flow Fuel Additive
- AMSOIL Diesel 4-IN-1 Fuel Additive
Prepared by SyntheticOilHQ, independent AMSOIL dealer 313120. Product information checked October 16, 2026. Consult the current manufacturer label for application details.