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roundhouse · 04-12-2020, 10:38 AM

So I picked up a gallon of castrol GTX Diesel 15w40 on clearance. It was $10. I put it in my hawk and have a couple hundred miles on it with no probs. I noticed it was API CH-4/SJ but not JASO MA-2 yesterday.

Other than the possibility of clutch slippage not using a JASCO 2 rated oil, can this cause damage to my bike. I need to change the oil in my new to me KLR650 and have enough to do it but do not want to do something harmful. The oil is really bad and was going to change it, run it a couple hundred miles and change it again. Would be nice to use super cheap oil but not at the expense of hurting my motor.

So, what do y'all think? Run it in the KLR and the Hawk or neither?

04-12-2020, 10:38 AM	#1
roundhouse Join Date: Sep 2017 Location: N Texas Posts: 706	Will any diesel oil work? So I picked up a gallon of castrol GTX Diesel 15w40 on clearance. It was $10. I put it in my hawk and have a couple hundred miles on it with no probs. I noticed it was API CH-4/SJ but not JASO MA-2 yesterday. Other than the possibility of clutch slippage not using a JASCO 2 rated oil, can this cause damage to my bike. I need to change the oil in my new to me KLR650 and have enough to do it but do not want to do something harmful. The oil is really bad and was going to change it, run it a couple hundred miles and change it again. Would be nice to use super cheap oil but not at the expense of hurting my motor. So, what do y'all think? Run it in the KLR and the Hawk or neither?
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