Type of oil to use?
#21
Question: doesn't the 10 weight mean not as much cold engine lubrication? Would a 5w40 be better in that regard? Possibly also Mobil 1 High Mileage? I do agree on the change interval, stretching it out to 10k in order to save money is kind of stupid, all things considered. On newer engines perhaps, but not on this one...
Went to Walmart yesterday, they have a variety of Shell and also Pennzoil and Valvoline. I use Valvoline full synthetic European Formula in my BMW, but that's a whole different ball game, completely different (and a much better) engine.
Went to Walmart yesterday, they have a variety of Shell and also Pennzoil and Valvoline. I use Valvoline full synthetic European Formula in my BMW, but that's a whole different ball game, completely different (and a much better) engine.
#22
#23
#24
Well, I got Shell Rotella T5 15w40 (synthetic blend) out of Walmart for $20 for a gallon. Also got a quart of Lucas High Mileage, but turns out I need 6 quarts total, and local Autozone/Advanced Auto do not carry Shell T5 in single quarts, if at all. In fact, oil selection there and in Walmart is pretty dismal compared to what it was back before Covid. Literally there wasn't really much to choose from. Mobil 1 variety was also very limited, so I pretty much had to chose Shell Rotella T5. Plus it seems that the T5 15w40 is one of the most popular choices for this truck across a couple of forums... Is it the perfect choice? Hell if I know.... It's almost September here in Washington, D.C. area, and this oil will likely still see some driving all the way through Christmas. And it does get pretty chilly here, but not like in Ontario, Canada or even Detroit, Michigan, for that matter.
#25
#26
#27
Good to know. Thanks for the heads up.
To all:
I have a Turner engine that has gone 30K. I have been using regular Mobil-1 synthetic. Added the ocassional zince additive from a bottle. I am wondering if I should change to the high mileage formulation for the additional additives for the valves and rockers. Thoughts please?
#28
#29
P.S. Installing an STP oil filter, el cheappo replacement of Motorcraft FL300 and Purolator L14670. Are these any good? It says it's rated for 5000 miles, which is how long I plan to run this oil, anyway. Worst comes to worst, the filter can be replaced mid-cycle with minimal oil losses, right?
Last edited by m1943; 09-03-2022 at 11:11 AM.
#30
When engine oil reaches is normal operating temperature it makes practically no difference if you use 15w or 10w oil. It makes a difference when oil temp is way below normal operating temp: 15w has a higher viscosity than 10w oil creating more resistance.