Problem is that not everything labelled "lanolin" or "pure lanolin" is 100% lanolin. It's other name is wool fat and that tells you what it actually is and gives an idea of what it will be like. Bown. Waxy. Not white like driven snow!
I used to make my own lubricant for bullet swaging and used a 50/50 mix of lanolin and castor oil. The lanolin you want, therefore, is anhydrous lanolin. It will be brown like a coffee with just a little too much milk. So lighter than a Galaxy chocolate bar but darker than a Caramac chocolate bar. nd waxy.
Personally I'd not bother and just buy Imperial Sizing Lube and spend the time you've saved doing something else. But if the stuff you've got is the brown waxy stuff that's the right stuff. Now get some castor oil and mix together over a low heat. Just don't lick your fingers when using it!