purchase of oil, lubricants, grease and aqueous urea solution , aqueous urea solution 32.5% in de-mineralized water (ad blue) for bs-iv , oil 80w/140 long drain period for bs-iv vehicles , engine oil bs-iv/bs-iii engines , gear box synchro 6536 with od oil , rear axle (differential) oil , radiator coolant for bs-iv vehicles , crtx3 (steering oil) , w brg. leyland grease , engine oil ch-4 15w/40 leyland and tata diesel engine and volvo buses , ad blue for volvo , engine oil ck4 15w40/10w30 for tata/al bs-vi , radiator coolant concentrated for tata/leyland bs-vi diesel/cng engine. , gear oil synchro 80w/90 long life (tata motor gear box-gbs 40/60/ swaraj mazda/al), bs-vi tata/al buses gear box , transmission fluid a-atf (tata & leyland power steering) bs-vi , brake fluid for tata/al bs-vi buses , wheel bearing, front & rear hub grease for bs-vi , gear oil axle alt 85w/140 long life (for tata/leyland/volvo/ swaraj mazda differential), bs-vi , aqueous urea solution 32.5% in de-mineralized water (ad blue) for bs-vi