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Update on the 15w50. Been running the 08 yaris mostly this week. First gas fill up on only 15w50 was 5.8 gals for 208 miles. So 35 mpg. Zero drop on mpg on this oil. This includes longer warmup time. Also the cat was deleted right before the switch and the 2nd o2 sensor along with it. One...

I would use it without hesitation. Especially in your warm climate. I have run 15w40 diesel oil in alot of gassers over the years. The best transmision mechanic I've ever met switched all of his vehicles to 15w40 as soon as they hit 100k. Winters can get down to -10f where I live. I'm sure it's...

Maybe I should do a freezer test between the 15w50 and the t6 5w40. See if I could post a video of it. What is approximate cost for Blackstone uoa?

Drove the 2008 yaris for 1st time with the 15w50 this morning. Coldest morning of the year so far. 33f fired up just as fast as the 5w40 in summer Temps. Wich surprised me. This car doesn't have temp or oil pressure gauges so no idea of what's different there. Honestly 0 difference felt between...

My previous trucks were a 1993 k1500 suburban 350 and a 1982 f250 300ci big six single barrel carb. Both got 15w40 year round never had problems in winter. That 300 was the easiest starting carcurated vehicle I've ever owned

Oh yes they are horribly inaccurate. All gm gages I've seen of the late 90s to mid 2000s are.

Underneath the intake there is a plate with a gasket. That was leaking oil so I replaced that gasket when I did intake. When you pull that plate you can see the cam

Lol indiana dude

Didn't realize the 15w50 had been out for so long. I hadn't seen it till recently. Glad to hear it's worked well for you. As for the 160t Stat. That has been In This truck for at least a year and probably 10 to 15k miles. Never any signs of moisture on dipstick. Actuall engine temp is probably...

This post was not made as a question if it's smart or not to run this oil in these motors. This post was made for future reference for others. If I find that it's not a good idea I will gladly post that. If it makes no difference I will post that as well.

Known cam issue because I seen it when I was fixing the intake. The cars have no cats because both the exhaust systems rusted off and I'm a cheap ass and fixed it with flex pipe. I was a mechanic for 10 years and managed 90+ peices of equitment.. I'm not playing games I'm genuinely curious what...

I guess I'm curios to see what happens. My bet is that both will be fine even in winter. I'm also curious if a 50w will affect the toyota vvt. Which I just replaced less than 1k ago. So if it gets vvt stumbling or codes again. Then I know that it's oil related and that a 50w would be to much for...

That is the experiment. How a 15w50 will do in harsh winter. In 2 different engine types. 1 being a pushrod ls v8 and the other a inline 4 ohc with vvt. The other reason I posted this is because I could find no posts about this particular oil run for a harsh winter in engines that call for 5w30...

Gonna do a long term experiment on mobile1 15w50. Temp range where I live goes from -10f to 100f. Gonna use 2 vehicles. A 2001 k1500 4.8l automatic. 205k on it. No cats. No egr. No knock detector. Known cam lobe wear. I forget which one but it was for cyl 7 or 8. Absolute beater of a truck. Was...