 QUICK HELP- Oil question, is it ok....?? |
 Jul 2, 2003 - 2:33 AM
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 Enthusiast  Joined Oct 13, '02 From Blairstown, New Jersey Currently Offline Reputation: 6 (100%)  |
Ok guys, quick question.....is it ok if im running 5w-30 grade oil in my 5s-fe?? After i already changed my oil today to 5w-30 i realized that the oil cap and owners manual both said to use 10w-30....so my question is, is it perfectly safe to run the new 5w-30 in my engine in this summer heat, or should i change it back to 10w-30?? The owners manual sounds like the 5w-30 is meant for colder operating temps, and i dont wanna screw my engine up by runnng a thinner oil.....but at the same time i dont wanna drain the oil back out if its fine to use it. SOMEONE HELP ME OUT!!
-------------------- 3rd gen ST205 3SGTE - Alive and boosting. |
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Replies
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Jul 2, 2003 - 10:22 AM
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Enthusiast Joined Apr 24, '03 From NYC Currently Offline Reputation: 0 (0%) |
Yeah, 5W-30 would be OK to use. The 1st # is the oil viscosity in cold temperature, and the 2nd # is the oil viscosity during normal operating temperature. So both a 5W-30 and a 10W-30 oil will have the same oil viscosity once the oil is up to normal temperature.
In general tho, you would wanna use a multi-weight oil with the narrowest range of viscosity (10W30 has a 20 weight difference, 5W-30 has a 25 weight difference). The wider the viscosity range an oil has, the more polymers are added, and that makes an oil more prone to viscosity & thermal breakdown. |
Posts in this topic
Silver94CelicaOwner QUICK HELP- Oil question Jul 2, 2003 - 2:33 AM
Mynzeyes better to be safe than sorry. . i use 10w-30 year ... Jul 2, 2003 - 2:36 AM Matthew yea i would say 10w-30 as well
but if you are run... Jul 2, 2003 - 3:20 AM GeEkBoY 5W30 is fine. I use it in the winter so the engin... Jul 2, 2003 - 10:04 AM macavely you'll be fine with the 5W-30W but keep checki... Jul 2, 2003 - 3:02 PM Silver94CelicaOwner Well, today i changed out the 5w-30 for some 10w-3... Jul 3, 2003 - 12:53 AM
1858 At least it pretty easy to drain & refill the ... Jul 3, 2003 - 1:17 PM |
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