Hi Fred,
My suggestion would be to find out how the engine is configured. This also includes which oil pan was installed from Caterpillar and all the support accessories. Once you now the original capacity from the serial number, perform an oil change with filter and as suggested start then stop the engine. let it sit for 5 minutes and check the scribe marks on the dip stick and document which side accurately represents FULL. To find out how the engine is configured from Cat, contact Dave Atherton. Hope this helps, Fred