Google Oilguard, their tests are $10/ea, and they test for TBN, (condition of the additive package).
May 28, 2005 / Oil cap left off #11 J JJT Veteran Member Joined Oct 13, 2001 Messages 1,810 Location Upstate NY, USA Tractor Kubota L3710 HST and a Kubota ZD21 60Pro Google Oilguard, their tests are $10/ea, and they test for TBN, (condition of the additive package).
May 29, 2005 / Oil cap left off #12 Garrabo Banned Joined Jul 22, 2003 Messages 505 Location GA Tractor 3120,X-575,BX1830,BX22 Blackstone will do that as well and e-mail the results to you.