Should oil be going into radiator of a 1998 Chevy Blazer

Tammy Bott

Asked by Sep 30, 2013 at 09:50 AM about the 1998 Chevrolet Blazer 4 Door 4WD

Question type: Maintenance & Repair

4 Answers


Engine Oil should not be going into the radiator of ANY vehicle, including your 1998 Blazer. Radiator is for coolant ONLY. If there is oil in there, take it to your mechanic ASAP.


Oil in coolant, not good, possible blown head gaskets or cracked head. A "Block Check" test should be performed.


Do you mean seperate oil lines into the rad. The 1/2 ton and larger trucks had engine oil cooling lines running from above the oil filter to the rad (driverside of the rad). Usually on z-71's or truck with tow packages. Your Blazer may have this system. If it's an automatic the tranny cooling lines would connect to the opposite side of the rad. For these two systems the oil(s) run through coils in the sides of the rad and are imersed in the engine coolant. They are and must remain separate from the coolant.

Chris McGee

Engine oil or trans fluid? Either way it's not good the transmission cooler is internal to the radiator and a full flush of the radiator and transmission along with new filter is required after replacing the radiator

Your Answer

Add photo

Related Questions


Looking for a Used Blazer in your area?

CarGurus has 1,649 nationwide Blazer listings starting at $1,999.


Search Chevrolet Blazer Questions

Chevrolet Blazer Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 1,690
#2 yetilikesbeer
Reputation 1,010
#3 dandyoun
Reputation 640
View All

Related Models For Sale

Used Chevrolet Tahoe"
1,074 Great Deals out of 36,045 listings starting at $1,700
Used Chevrolet S-10"
13 Great Deals out of 1,811 listings starting at $1,749
Used GMC Jimmy"
366 listings starting at $1,900
Used Chevrolet Silverado 1500"
2,447 Great Deals out of 144,719 listings starting at $1,995
Used Ford Explorer"
1,370 Great Deals out of 71,771 listings starting at $300
Used Jeep Grand Cherokee"
1,214 Great Deals out of 73,883 listings starting at $1,593
Used Ford F-150"
3,267 Great Deals out of 216,697 listings starting at $1,500
Used Chevrolet Camaro"
798 Great Deals out of 38,822 listings starting at $2,650
Used Chevrolet Suburban"
663 Great Deals out of 24,068 listings starting at $1,500
Used Chevrolet C/K 1500"
1,138 listings starting at $2,400
Used Jeep Wrangler"
461 Great Deals out of 16,417 listings starting at $3,400

Used Cars For Sale

2005 Chevrolet Blazer For Sale
12 listings starting at $3,450
2003 Chevrolet Blazer For Sale
153 listings starting at $2,450
2001 Chevrolet Blazer For Sale
231 listings starting at $3,850