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That video and another one by a fellow who shows the tops of the pistons in a 4 cylinder Toyota with 300k on it both show MMO doing a bit more than Seafoam to soften and remove carbon. I would not have thought that... I've been using Seafoam for a while now, and will continue to. I've used it...

That video and another one by a fellow who shows the tops of the pistons in a 4 cylinder Toyota with 300k on it both show MMO doing a bit more than Seafoam to soften and remove carbon. I would not have thought that... I've been using Seafoam for a while now, and will continue to. I've used it...

late report I know... but after 1000 to 1500 miles with the Auto RX in the crankcase of this truck, we can see a small amount of difference in the long pull up the mountain mentioned earlier--and air temperature and such could be accounting for that difference as much as anything. So I'd have to...

I don't want to pull the valve covers... I'm too lazy. But I will report what the speed difference, if any, is in OD on I-77 North from my home near Wytheville, VA. Dan

Thanks for the welcome back, guys. I will try the AutoRX since I did order it already (before posting here) ... and see if it'll help my wife's pick up. I have a way of knowing pretty quickly if the engine has gained any compression, as we have a long interstate hill to pull going north from...

Wow. It's been quite a while since I last posted here. Life got busy and retirement from truck driving came, I started a new business... time moves quickly... Let me duly apologize to everyone who has PM'd me over the last 2 or 3 years, for not replying. And I have several pages of PM's it...

I posted a couple UOA's from this oil on Harley's of mine and a friend's of mine... it's super robust, and nothing seems to actually beat it. You can spend more money and not do one iota better... Dan

Originally Posted By: JCM35 You couldn't pay me to use car oils in a motorcycle. Regardless of whatever spec whatever car/diesel oil has going for it. ...ya really gotta spend some time in the motorcycle UOA archives here. Of course if you'd rather not let facts get in the way... ...carry on...

...and by the way, I went on and got the TBN this time because so many of the members here are interested in that number. I guess the old Havoline still had a lot of "go" in it, though the thickening issue should probably be watched. I don't plan on running past 3000 miles in the future on this...

I think it probably had begun to thicken... it's generally been shearing to a 40 weight, and this time it doesn't seem to have sheared. I'd say if I had taken it out at 2500 to 3K it may have been thinner. No other additives, not even in the gas, so it's straight automotive 20W50 Havoline in...

this OCI was sort of an exercise in neglect... half unintentional, the other half "oh what the heck..." ...anyway, I left the oil in for 13 months... probably closer to 14, and didn't change it as I had been, about every 2500 to 3000 miles... I let it go for over 4400 miles. It's not too bad...

It's not winterized at Flying J here in Virginia, although it might be elsewhere (like up farther north)... I've worked for Flying J almost 17 years, and we don't put anything in it in these parts, it's just straight rack diesel. I'm switching jobs to another carrier next week that's going to...

Part of my job is delivering fuel to surface mines (strip mines) where they have above ground tanks for diesel. We have begun, at the request of 3 of the mines we haul to, to put in 2.5 gallons of anti-gel additive for the winter season. One particular mine foreman told me that last year...

If the oil broke down, a valve getting embedded into the head wouldn't be the first thing that happened... the cam lobes and/or lifters and main bearings would trash well ahead of a valve embedding into the cylinder head. This is a manufacturers (Harley Davidson) defect if you ask me, and...

This report would indicate that the Valvoline 20W50 motorcycle oil is higher in zinc, phos, and calcium than VR1 is, if these numbers are correct. Thanks for sharing the report. Dan

Thanks for the info. I'll check some of these ideas out sometime this week and get back with an update. Dan

I have a 1976 Hahn push mower with a 4HP Briggs engine. It's the old white engine, with the auto choke set up. I have taken the carb down and cleaned it, and put in a new air filter... and a carb base gasket/diaphragm thing... the choke seems to be working right. If you tip the mower, spark...

HD does oil changes at 2500 miles under current service plans, fwiw. "After years of hearing this then watching people use every low cost no name oil made,and having their motors last just as long, you have to realize its all sales hooey." I agree... :) Dan

Yes, I would feel confident with either the Havoline, or the VR1. The flash point shows a lot about how robust the base of an oil is (assuming it's not fuel diluted). I agree with your premise that the HD oil is plenty good, I just think that you can get better oil for less than half what they...

I agree... the HD branded oil works just fine. You can't knock the performance, only the price. It's around 9 dollars a quart in these parts now. The reason Harley has raised the price is they charge BIG BUCKS to change the oil in the bikes of the "great unwashed." (the folks who are terrified...