Delo 400 XSP Synthetic 5w40

[NCLX450]

I wanted to try this in my GX470 since I was going to be towing this summer. My GX has 174k miles and has routinely used Penzoil platinum 5w-30 Synthetic we 0 issues. I wanted to try Delo 400 XSP Synthetic in 5w40. My LX450 loves Rotella but I hate the smell. Any issues with running 5w40 Delo?

Thanks

 

[JLee]

Is your oil pressure too low with 5w30?

 

[NCLX450]

No it's perfect. I just wanted to try the Delo since the Rotella did so well with my high mileage LX450. I thought that maybe the HD Delo synthetic might be good towing with 40 weight in the hot summer.

 

[half k cruiser]

My suggestion would be to read up on some modern oil data. A lot of folks don't have a good understanding of how oil works and are basing decisions off of old outdated ideas/hearsay. For instance the heavyweight oil for heat dissipation debate. You see a lot of the I run Xw-40 because it dissipates more heat. Whereas guys who really geek out on oil would tell you oil flow dissipates more heat than oil weight. In which case you would want a thinner weight oil. I also seriously doubt there are too many people out there in the 4x4 community monitoring there oil temps for any empirical data.

 

[Bill R]

Ask this question at "Bob is the oil guy" BITOG. You should get plenty of informed opinions.

 

[GXO]

I would stick to spec (5w30) as the 2UZ is not necessarily "new" in design, but is light years ahead of the 1FZ. Tractor motor vs modern motor. I haven't had a problem with using spec oil year round in the GX and put a lot of miles on, off, and towing.

 

[kbahus]

1FZ is apples to oranges in this debate. 5W-30 in the 2UZ is what I would suggest. I will be at 300k on one of mine this year and it doesn’t sip and ounce of oil running 5W-30. My 1FZ was another story, 15W-40 in that old tractor engine.

 

[half k cruiser]

I would stick to spec (5w30) as the 2UZ is not necessarily "new" in design, but is light years ahead of the 1FZ. Tractor motor vs modern motor. I haven't had a problem with using spec oil year round in the GX and put a lot of miles on, off, and towing.

1FZ is apples to oranges in this debate. 5W-30 in the 2UZ is what I would suggest. I will be at 300k on one of mine this year and it doesn’t sip and ounce of oil running 5W-30. My 1FZ was another story, 15W-40 in that old tractor engine.

If your running 5w30 you may as well just bump it to 0w-30. Even more startup benefit, and no downsides. The cost is even the same.