Castrol 06116 Power1 V-Twin 20W-50 Synthetic 4T Motorcycle Oil - 1 Quart Bottle by Castrol

Works great for my Harleys

Harley twin cam 88 seems to like it runs quieter, I think so anyway, like Castrol oil but hate the foil seal on bottle,my advice is to use a funnel with screen! you don’t won’t any mishaps with foil in oil tank.

I'll be damned if I'm going to pay what Indian wants for their 20w40 oil for the Thunderstroke engine. 52,000 miles with this oil and it's been great. Oil changes at 5,000 miles as recommended for the OEM oil, and I never have to add oil in between. Blow by into the airbox is the same as the OEM oil. Cold starting is the same in the winter (mornings as low as 25F). I also ride in 120F-plus desert weather, which is hell-on-a-hotplate, but the bike handles it better than I do. I've even used an IR thermometer on the cylinder heads and seen no difference between OEM oil and this, with hundreds of readings taken at different times and ambient temperatures. Clutch and shifting action are unchanged between Castrol and OEM. I've also used Valvoline's V-twin oil though and noticed no difference, so this is certainly not a religion for me. It's mainly that Castrol as a good V-twin oil and a good high-zinc oild for my air-cooled VW Baja Bug, so I stick with them out of habit.

as expected, box of jugs of oil

I'm an idiot, but this is a fine product. When this arrived, I was happy as could be. Moving swiftly after I got home, I cracked open the box while the blackened life's blood of my 2008 BMW R1200RT seeped into a box of sorbents. Trying to find an oil of the kind mentioned in the owner's manual had been challenging, but Amazon delivered exactly what I asked to my doorstep. Draining the old oil went so smooth you'd think I knew what I was doing. When time came to add the new stuff, I buttoned up the bottom and installed my Awesome Oil Filter . Now, the manual had mentioned how much oil to add. About 4 Liters or 4 bottles and a tiny bit of spare change. I meticulously used the little sight glass at the bottom of the motor. So far, so good. I was patting myself on the back way too soon. Did you know there's a thermostat on the oil cooler? I didn't. My victory lap was starting up the bike to make sure the oil level didn't change. It was perfect until it shot up over the top of the sight glass. The oil cooler doesn't let it's oil go until the appointed temperature is met. I was left with a little bit of a quandary. With the convoluted innards of my BMW, I couldn't even see oil from the cylinder head to suck out. So I get this great idea. I'll just crack open the oil nut a little bit, let it drain back to acceptable levels and close the screw. Two minutes later I'm cussing as hot oil washes over my bare hands and my oil catchment box is going from 'just right' to 'gonna mess up your garage'. Turns out it goes from painfully slow drips to an unstoppable torrent in like a quarter turn. In desperation, I tried to block the hole while I fished for the screw. Imagine with me, please. I just burnt my fingers with the initial gush and what do I do? Reach my hand into a box of hot oil. The sweet honey-gold Castrol synthetic oil was gone. There wasn't anything wrong with the oil. The problem was between the floor and the motorcycle (me). Happy riding. The burns were minor to my hands, but more severe to my pride.