Oooooh, a 1981 KZ750E! I had an'81 Suz GS750EX I bought new as a holdover in 1982. I battled a few KZ's, it was a flip of the coin. I'm on the black one in the foreground. Pic probably taken summer of '82.....
Can I use Mobil-1 V-Twin 20-50 in an EXC450 single cylinder water cooled motor? Yes I know I can use it but is there any reason not to, or why you shouldn't? I have used Lucas 20-50 full syn motorcycle oil in my '07 KTM EXC450 since I bought the bike in '2010. I only use it because it was easy...