The heaviest and lightiest oil u have used?

[earlyre]

until 2010 i used 10w30 in pretty much everything.
that's as "thick" as i've gone.

and as for "thin" My Current run of 0w20 in my sable.

 

[fields]

50wt and 0w-20

 

[BAJA_05]

20W50 in HD Road King

0W20 in Acura

 

[Tomioka]

20W50
Sooner or later 0W16.

 

[kr_bitog]

0w-20 and HM 10w-40 with Rislone, now I am happy with 10w-30

 

[anndel]

5W-30 in our newer vehicles (>2005), 10W-30 in our 93 truck. I've used 20W-50 in the yota but switched back to 10W-30.

 

[double vanos]

5w20, 20w50, decades ago.

 

[SilverFusion2010]

0w-20
20w-50

 

[SilverSnake]

20W-50 in my HD motorcycles over the years. 0W-20 currently in my wife's BMW.

 

[eyeofthetiger]

0W-20 synthetic in the winter when I lived up north
20W-50 currently in the old GMC because it is worn out and has low oil pressure with anything less

 

[Ducked]

Originally Posted By: andyd
my first car, a '53 Ford, paid 5$ for, came with 90 weight diff lube in the crankcase to keep the main bearings quiet.


That could have been the same viscosity as an SAE40 engine oil, so not necessarily all that heavy

 

[SR5]

Thick: Penrite 20W-60 mineral and Castrol 10W-60 synthetic.
Thin: The Mobil 1 5W-30 I'm running now, my very first ILSAC oil.

 

[gfh77665]

Thick: SAE 40wt. in the TX summer. My truck never noticed it.

Thin: 5w-20 just to pacify Hondas warranty. Went to 5w-30 afterwards.

 

[cjcride]

20W50 on an ole clunker & 5W20 on a new Hyundai

 

[Silk]

I've used straight SAE 70, thinnest is 5W-30.

 

[Silverado12]

2007 Harley Dyna with 96 c.i. engine takes 20W-50.
2017 Jeep Cherokee (wife's) with 2.4L "Multi-Air" engine takes 0W-20.

 

[Jarlaxle]

Thick: 20W-50 or SAE40.
Thin: 5W-20.