After purchasing heal a seal product and using as directed in their booklet, the product would not fix the issue, a leaking cylinder head gasket. I emailed them for help as advertised and they will not respond to my emails.
The product has not worked and looks like they are trying to get out of refunding money if it does not fix the issue.
Would like to warn other from dealing with this company. I read comments on various websites about this product the majority are from people who have not tried the product. I have tried the product and it has not worked, they do not respond to emails for technical help as advertised in there web page.