Can i run mobil1 15W50?

Coupe5oh · 01-13-2002, 05:10 PM

I got a case of it, gave to me for free, is it too thick? i dont want to waste it, maybe i can mix it with some 10w30, what would u do? this stuff is 4.99$ a qt

so im using it somehow.

egiap's 5.0 · 01-13-2002, 06:25 PM

Your car should take 5w30 or 10w30. The 15w40 should be fine in your car. Never mix two different weight oils. Most car makers require the use of lower weight oils to bring up fuel mileage to goverment specs. Keep a eye on oil level since your changing brands. The different detergents in oil might work at any varnish around seals and cause some oil consumption. Hope I helped.

PKRWUD · 01-13-2002, 10:15 PM

I'd take it to your favorite auto parts store and exchange it for 10w30. As far as using Mobil1, I swear by it, but if you've got alot of miles on your engine using regular oil already, it could cause problems.

Take care,
-Chris

Coupe5oh · 01-13-2002, 11:58 PM

Thanx you guys, i appreciate your help, glad to have people with knowledge like yours around.

now i have run synthetic in the past, I have used exxon durablend 20w50 racing oil before also, (is that heavier then 15w50?) but I thought that was a lil too heavy, ill just use it, and see what happens thnx.

Phantom5oh · 01-14-2002, 12:17 PM

If I were you I wouldn't mix synthetic oil and conventional oil. Its not a good idea because the synthetic oil has a tendancy to break down conventional oil and the conventional oil's detergents destroy the synthetic oils properties. My boss told me this after he learned the "hard way." Thats how he explained it to me, but the lingo might be a little off since he is a medical engineer and the vocab is similar but not always the same. But I do know that a blended oil is not the same as mixing synthetic and conventional, because the blend is made to work with the right properties as to not break either down.

I did run the 15-50 in my car over the summer. I found that it was heavier and didn't allow my engine to rev quite as fast, but I didn't burn it as fast as the 10-30 I was using before.

Steve

95mustanggt · 01-14-2002, 02:14 PM

The lower wieght oils are for colder climates and are thiner. The Higher weight oils are thicker and perform better at higher temps.

In (northern) Canada people even run 0W30 oil. It helps when the temperatures extend down to -40 degrees for long periods of time.

I think us guys way down south can get away with using 15-50 oil, it protects better when it gets hot, and we don't need the cold temp protection (Texans don't even know the meaning of cold

).

I used to run sythetic 5W50 when I lived in Edmonton, Canada.

Coupe5oh · 01-14-2002, 05:02 PM

Yes everyone has been helpful, im gonna change it now, lol yea us texans dont know what cold is, all the tourist here in s.a some from up north, walk around here in shorts saying its warm, hehe and thats in the upper 30's, upper 30s is cold for me, lol and when it drops around 20* its like the whole city shuts down..

Yea thicker oil might slow the reving of a motor i agree, but full synthetics can free up hp....thnx again

Phantom5oh · 01-14-2002, 05:06 PM

Well I almost always run synthetic 10W-30 so when I used 15W-50 I noticed the lag in rev speed.

Steve

HiFlow5 0 · 01-14-2002, 05:18 PM

has anyone ever run 10W-40? my dad was telling me i should try that in my car and see how it works. any opinions?

Phantom5oh · 01-14-2002, 10:48 PM

10W 40 is just a bit thicker when at operating temp. That wont hurt a thing. It would be good in the summer heat, but not in a New England winter.

Steve

Mach 1 · 01-15-2002, 04:32 AM

Use the oil and dont worry about it. You can mix oils also, whoever said you cant is wrong.

Ive switched my truck to synthetic, back to conventional, back to synthetic, whatever I happen to find a deal on, doesnt matter...

Coupe5oh · 01-16-2002, 12:20 AM

Alright, but i think they meant mixing oils in the same oil change, thnx, but its a done deal now.

01-13-2002, 05:10 PM	#1
Coupe5oh Registered Member Join Date: Nov 2001 Location: SanAntonio, Tx Posts: 734	Can i run mobil1 15W50? I got a case of it, gave to me for free, is it too thick? i dont want to waste it, maybe i can mix it with some 10w30, what would u do? this stuff is 4.99$ a qt so im using it somehow. __________________ Police package 5spd 90 Lx, Stock original motor, 3.27grs, BM fan, fms 10.5 clutch, D&D quadrant, and adjuster, ADS chip, 180 stat, mac cai, mac h-pipe, mac subframe connectors, ASP crank pulley, ripper shifter, 26x10.5 M/T sport pros welds. 246 hp according to analyzer Race weight: 3,120 E.t-13.57 with 26x10.50's e.t. streets. 1.88 60' mph- 99.92 mph

01-13-2002, 06:25 PM	#2
egiap's 5.0 Registered Member Join Date: Apr 2001 Location: Mansfield, OH. Posts: 113	Your car should take 5w30 or 10w30. The 15w40 should be fine in your car. Never mix two different weight oils. Most car makers require the use of lower weight oils to bring up fuel mileage to goverment specs. Keep a eye on oil level since your changing brands. The different detergents in oil might work at any varnish around seals and cause some oil consumption. Hope I helped. __________________ Amsoil, The finest in synthetics T-1 certified Amsoil dealer Oils,Lubes,Filters www.lubedealer.com/midohio

01-13-2002, 10:15 PM	#3
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	I'd take it to your favorite auto parts store and exchange it for 10w30. As far as using Mobil1, I swear by it, but if you've got alot of miles on your engine using regular oil already, it could cause problems. Take care, -Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

01-13-2002, 11:58 PM	#4
Coupe5oh Registered Member Join Date: Nov 2001 Location: SanAntonio, Tx Posts: 734	Thanx you guys, i appreciate your help, glad to have people with knowledge like yours around. now i have run synthetic in the past, I have used exxon durablend 20w50 racing oil before also, (is that heavier then 15w50?) but I thought that was a lil too heavy, ill just use it, and see what happens thnx. __________________ Police package 5spd 90 Lx, Stock original motor, 3.27grs, BM fan, fms 10.5 clutch, D&D quadrant, and adjuster, ADS chip, 180 stat, mac cai, mac h-pipe, mac subframe connectors, ASP crank pulley, ripper shifter, 26x10.5 M/T sport pros welds. 246 hp according to analyzer Race weight: 3,120 E.t-13.57 with 26x10.50's e.t. streets. 1.88 60' mph- 99.92 mph

01-14-2002, 12:17 PM	#5
Phantom5oh Registered Member Join Date: Mar 2000 Location: Boston, MA Posts: 334	Oil If I were you I wouldn't mix synthetic oil and conventional oil. Its not a good idea because the synthetic oil has a tendancy to break down conventional oil and the conventional oil's detergents destroy the synthetic oils properties. My boss told me this after he learned the "hard way." Thats how he explained it to me, but the lingo might be a little off since he is a medical engineer and the vocab is similar but not always the same. But I do know that a blended oil is not the same as mixing synthetic and conventional, because the blend is made to work with the right properties as to not break either down. I did run the 15-50 in my car over the summer. I found that it was heavier and didn't allow my engine to rev quite as fast, but I didn't burn it as fast as the 10-30 I was using before. Steve __________________ 95 GTS 03 DR 650SE Sgarzi's Machine Works

01-14-2002, 02:14 PM	#6
95mustanggt Registered Member Join Date: May 2000 Location: Kamloops, BC Posts: 2,875	The lower wieght oils are for colder climates and are thiner. The Higher weight oils are thicker and perform better at higher temps. In (northern) Canada people even run 0W30 oil. It helps when the temperatures extend down to -40 degrees for long periods of time. I think us guys way down south can get away with using 15-50 oil, it protects better when it gets hot, and we don't need the cold temp protection (Texans don't even know the meaning of cold ). I used to run sythetic 5W50 when I lived in Edmonton, Canada. __________________ 1995 Mustang GT 20016 F150 Lariat Super Crew

01-14-2002, 05:02 PM	#7
Coupe5oh Registered Member Join Date: Nov 2001 Location: SanAntonio, Tx Posts: 734	Yes everyone has been helpful, im gonna change it now, lol yea us texans dont know what cold is, all the tourist here in s.a some from up north, walk around here in shorts saying its warm, hehe and thats in the upper 30's, upper 30s is cold for me, lol and when it drops around 20* its like the whole city shuts down.. Yea thicker oil might slow the reving of a motor i agree, but full synthetics can free up hp....thnx again

01-14-2002, 05:06 PM	#8
Phantom5oh Registered Member Join Date: Mar 2000 Location: Boston, MA Posts: 334	yep Well I almost always run synthetic 10W-30 so when I used 15W-50 I noticed the lag in rev speed. Steve __________________ 95 GTS 03 DR 650SE Sgarzi's Machine Works

01-14-2002, 05:18 PM	#9
HiFlow5 0 Registered Member Join Date: Mar 2000 Location: Springfield, Ma, usa Posts: 706	has anyone ever run 10W-40? my dad was telling me i should try that in my car and see how it works. any opinions? __________________ NewEngland Auto www.baystategearheads.com -91 Mustang Coupe, ex 4cyl (sold) -99 F150, 3" lift, 35" Procomps, Magnaflow exhaust

01-14-2002, 10:48 PM	#10
Phantom5oh Registered Member Join Date: Mar 2000 Location: Boston, MA Posts: 334	10W 40 is just a bit thicker when at operating temp. That wont hurt a thing. It would be good in the summer heat, but not in a New England winter. Steve __________________ 95 GTS 03 DR 650SE Sgarzi's Machine Works

01-15-2002, 04:32 AM	#11
Mach 1 Registered Member Join Date: May 1999 Location: Georgia Posts: 3,866	Use the oil and dont worry about it. You can mix oils also, whoever said you cant is wrong. Ive switched my truck to synthetic, back to conventional, back to synthetic, whatever I happen to find a deal on, doesnt matter... __________________ 2002 GT 1993 GT (SOLD) '93 Mustang GT RHC member #142

01-16-2002, 12:20 AM	#12
Coupe5oh Registered Member Join Date: Nov 2001 Location: SanAntonio, Tx Posts: 734	Alright, but i think they meant mixing oils in the same oil change, thnx, but its a done deal now.

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