Thats the same stuff I buy. I only use it in my mower now. Am thinking about switching over both our work cars. Kinda nervous about trying synthetic in the antiques though. Might screw something up in those old rigs. They might not no what to do with the stuff.
I took my 28 Model A for a spin last night. I had it up to 60mph. That thing runs like a top.
I called several john deere service departements to get their opion on this subject and one guys opion was that what ever you started out with is what you should stick with and not switch to another type of oil. Is there any truth to this.
I once read that oil from different companies should not be mixed together when topping off between oil changes on cars. The additives could interact and cause sludge buildup. That was before the syns were available. Since some of the old oil remains after a drain and refill, it's probably best to pick a company and type and stay with it and not make a habit of switching around.
Adamr88 and everyone else I just check in my Techinal Manual that my son bought and gave to me early for Christmas and this is what it said.
"Synthetic lubricants may be used in John Deere equipment if they meet the applicable performance requirements (industry classification and/or military specifications) as shown in this manual.
The reccommended air temperature limits and service or lubricant change intervals should be maintained as shown in the operators manual.
Avoid mixing different brands, grades, or TYPES of oil. Oil manufacters blennd additives in their oils to meet certain specifications and performance requirements. Mixing different oils can interfere with the proper functioning of these additives and degrade the lubricant performance."
I guess John Deere answered the question in the tech manual for you.
I forgot to include an answer to your original question. The (CV15) Kohler tick occured only twice for a minute or so up to the 5 hr. oil change and has not returned, about 50 hrs. on it now. Using 10W-30 dino all along in the Kohler and 30W dino in the mowers and tiller. One mower is 4 years old and the other mower and tiller are pushing 30 years old, all B&S engines. Using 5W-30 dino in my 98 chevy truck. I'm naturally slow to change my ways. I figure if the new engines are not running in 30 years like the other ones are now, it is not the oils fault anyway. It's a cheap/bad engine design that would have failed no matter what blood was in it's veins.
You should also notice a differance in cold weather. The synthetic oil flows much better atr lower temps than regular oil. The engine should turn over much faster in cold temps with synthetic.
I use Mobile 1 also.
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