motor oil 5-30 vs 10-30

25

Asked by Apr 30, 2008 at 03:45 PM about the 2003 Jeep Wrangler Rubicon

Question type: General

i live in a hot climate is 10-30 motor oil a good oil to use

8 Answers

30

5-30.......threre's no need to use something as heavy as 10-30.

3 people found this helpful.
145

5-30 is all around even. its thinner than 10-30, so it starts in colder weather better. but when the engine warms up, there is hardly any difference.

2 people found this helpful.
455

use thicker oil if you have alot of miles, both oils have the same viscosity cold...30 weight, then the viscosity changes when engine oil is warm 5 is then thinner than 10 w 30. there really isnt alot of difference between the two.

1 people found this helpful.
135

Define hot, and a 10w-40 is better for the 4.0. Its an old school design with big bearing clearances. The thicker oil keeps it happy. As an FYI to the rest, the 1st # on oil is its viscosity when cold. The 2nd # is the viscosity when hot.

6 people found this helpful.
108,945

Everything you ever wanted to know about oil and lots more --- http://www.bobistheoilguy.com/motor-oil-101/

5 people found this helpful.
20

The W stands for Winter. It is the viscosity on a cold start. When the engine reaches operating temperature, the viscosity is the second number.

2 people found this helpful.

Use what the mfg. recomends. These new engines are different than old school. My truck said 5W-20. It scared me, since I pull trailers. But, now at 85K , just like new. Change oil when light says. Shop claims they analyze oil on engine failures. If not what recommended then no warrenty. Simple enough for me.

Zachary has it backwards. The 30 is the viscosity when warm, both are the same. The 5w is slightly thinner when cold than the 10w.

Your Answer:

Wrangler

Looking for a Used Wrangler in your area?

CarGurus has 15,006 nationwide Wrangler listings starting at $2,500.

ZIP:

Jeep Wrangler Experts

  • #1
    tennisshoes
    Reputation
    480
  • #2
    Tom Demyan
    Reputation
    440
  • #3
    Dorian Hendricks
    Reputation
    380
View All

Related Models For Sale

Used Jeep Grand Cherokee
1,103 Great Deals out of 77,988 listings starting at $900
Used Ford Mustang
297 Great Deals out of 39,759 listings starting at $1,312
Used Toyota Tacoma
429 Great Deals out of 49,110 listings starting at $2,400
Used Ford F-150
2,319 Great Deals out of 198,937 listings starting at $1,300
Used Chevrolet Silverado 1500
1,787 Great Deals out of 155,768 listings starting at $1,495
Used Toyota 4Runner
218 Great Deals out of 33,344 listings starting at $1,995
Used Chevrolet Camaro
242 Great Deals out of 26,934 listings starting at $2,900
Used Jeep Liberty
153 Great Deals out of 5,971 listings starting at $695
Used Chevrolet Corvette
79 Great Deals out of 15,067 listings starting at $3,700

Used Cars For Sale

2017 Jeep Wrangler Rubicon For Sale
196 listings starting at $29,667
2016 Jeep Wrangler Rubicon For Sale
5 Great Deals out of 81 listings starting at $27,452
2015 Jeep Wrangler Rubicon For Sale
87 listings starting at $21,087
2014 Jeep Wrangler Rubicon For Sale
5 Great Deals out of 81 listings starting at $22,988

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.