Printable Oil Viscosity Estimator Chart
This one-page Letter PDF is for anyone who needs a quick oil viscosity estimate from data-sheet values. It shows a viscosity-temperature estimator based on the Walther equation with columns for Temperature °C, cSt at 40 °C, cSt at 100 °C, and Estimated cSt. Sample rows are included, such as 0, 20, and 150 with 60 cSt at 40 °C and 10.5 cSt at 100 °C.
Free printable · PDF
- 2 pages
- US Letter — choose “Fit to page” for A4
- PDF, 100 KB
Free for personal, family and classroom use.
Enter the temperature you want to check, then use the oil’s listed viscosities at 40 °C and 100 °C. The sheet estimates viscosity in column D for that temperature. Print it for reference at the bench, or keep it open while comparing oils and checking temperature-dependent changes.
Good for
- Estimate oil viscosity at a target temperature
- Compare oils using data-sheet cSt values
- Keep a quick reference during maintenance
Tip: Print at actual size so the column labels and sample rows stay easy to read.
4 files · PDF, XLSX, DOCX
Get every sheet: Oil Viscosity Reference Pack
This sheet plus 3 more in one download, with the editable Excel and Word files. Printable SAE J300 and ISO VG viscosity charts, a spreadsheet that estimates viscosity at any temperature from data-sheet values, and a vehicle and equipment oil change log.
$5.00 USD, one-time 4 files · about $1.25 each
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