input please
Outstanding HDF Member
Joined: Jul 2013
Posts: 2,874
Likes: 36
From: Houston, TX
People who think flat tappet motors build up zinc on the tappets are stupid. Your evo isn't a flat tappet motor, but it damn sure isn't going to build up zinc anywhere. An oil with a pressure rating of well over 100,000 psi and 660ppm of zinc won't provide any better, or worse lubrication than an oil with a pressure rating of 80,000psi and 1600ppm of zinc. The other oil is just going to handle wear and shear better.
I, like Throttle Jockey, have come to prefer Valvoline VR1 50w.
Dirt don't hurt
Joined: Jan 2011
Posts: 21,065
Likes: 4,561
From: Haslet Texas
You don't need a lot of zinc. What you need is an oil with a high pressure rating. An oil with a high pressure rating will have a lower zinc content, but due to its high pressure rating, meaning less wear and shear, it will retain its zinc better. High zinc oils usually aren't GOOD oils.
People who think flat tappet motors build up zinc on the tappets are stupid. Your evo isn't a flat tappet motor, but it damn sure isn't going to build up zinc anywhere. An oil with a pressure rating of well over 100,000 psi and 660ppm of zinc won't provide any better, or worse lubrication than an oil with a pressure rating of 80,000psi and 1600ppm of zinc. The other oil is just going to handle wear and shear better.
I, like Throttle Jockey, have come to prefer Valvoline VR1 50w.
People who think flat tappet motors build up zinc on the tappets are stupid. Your evo isn't a flat tappet motor, but it damn sure isn't going to build up zinc anywhere. An oil with a pressure rating of well over 100,000 psi and 660ppm of zinc won't provide any better, or worse lubrication than an oil with a pressure rating of 80,000psi and 1600ppm of zinc. The other oil is just going to handle wear and shear better.
I, like Throttle Jockey, have come to prefer Valvoline VR1 50w.
I have the 20W-50, 50W, and 60W on a shelf in the garage.
Outstanding HDF Member
Joined: Jul 2013
Posts: 2,874
Likes: 36
From: Houston, TX
I know it is, but it's the only 50w that I know of that can be had for a price that won't break the bank. It doesn't have too little nor too much, and that's all that matters to me. I change it every 2-3k anyways.
Stellar HDF Member
Joined: May 2009
Posts: 2,856
Likes: 127
From: Middle of Kansas
I can't get most any 50 or 60 strait wt. oil where I live except at HD. I run 50 wt. HD 360 thru the summer and change to Castrol GTX 20-50 thru the winter. I can get the Castrol at Walmart in 5 quart jugs for less than $17.00 iirc. My EVO seems to like it just fine.
Stellar HDF Member
Joined: May 2009
Posts: 2,856
Likes: 127
From: Middle of Kansas
You should use Crisco in the summer for both and Wesson in the winter for both. Wesson is just to thin for summer and Crisco is to thick for winter. I can not believe you did not know this. If you had just payed attention whilst reading the oil threads........
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Seasoned HDF Member
Joined: Mar 2010
Posts: 21,100
Likes: 7,629
From: Poolville
Pennsoil
I've been using Pennzoil 20w-50 for several years now and am happy with it except for city driving in Manhattan, oil pressure hardly moves the gauge and the motor gets hotter and louder than normal. Any Suggestions?
Road Warrior
Joined: Mar 2010
Posts: 1,290
Likes: 7
From: D/FW Texas
perhaps something other than Pennzoil next time if you're not happy with it? (maybe try Redline)