So yearly minimum you can expect of 20k. It need to be serviced every 7500km and if ride less then ofcourse the service cost will come down. Average 4 monthly routine service costs 3.5k including Advised oil change intervals are at 7,500 km if not mistaken (not 3,000). Fully synthetic can work well up to 15,000 km not sure your paper oil filter can. I see absolutely no benefit of the coffee filter excersize but as said it is your bike, your rules. Your catch line, imho, is simply wrong. I check it every oil change and it’s clogged. KTM 690, 790, 990, 1190, 1290. KTM track racing, adventure stories, KTM 50 fix-ups and more. Full Forum Listing.
Oil changed way under the service limits. Longest run was probably 7000 km. Sometimes due to wanting fresh oil before a trip, other times to have fresh oil for winter storage. Always Motorex Powersynt 10/50. Had a Blackstone labs analysis done around 12000 km and all was good. At 25000 km it's pretty darn close to the service interval of 30000
The KTM 790 Duke is based on an all-new LC8c (the “c” being for “compact) engine, which was adopted into the KTM 790 Adventure the following model year. It’s a liquid-cooled fuel-injected 799cc parallel twin that in the 790 Duke makes max power of 78 kW (105 hp) @ 8500 rpm, and 86 Nm (64 ft-lb) of torque at 8000 rpm. The Apex Pro 6500 cartridges are designed to be drop-in replacements for the 790 Duke’s OEM WP units. As with the stock cartridges, the compression damping is handled by the left fork leg, and the rebound is managed by the right, giving complete separation of the two circuits. Unlike the OEM units, the 6500s also include preload adjustment. aQnun. 408 67 43 357 62 191 216 169 432

ktm 790 adventure oil change interval